Football Glossary, Part One: Offensive Terms

By 4Football Staff · October 16, 2026 · 10 min read

A plain-English glossary of offensive football terms, from formations and play calls to runs, passes and routes, with the words announcers use all game long.

Watch a broadcast with someone who has never seen football and you will hear it within five minutes: "He audibled out of the shotgun, checked it down to the back on a bootleg, and they moved the chains." Every word is ordinary English. Together they sound like a foreign language.

This is the first of three glossaries on 4Football. This one covers the terms that belong to the offense, the unit that has the ball and is trying to score. Part two covers the defense, and part three covers special teams and the general vocabulary of the game.

A note before you start. Football slang varies by team, by level and by region, and coaches love to rename things. Where a term has more than one common meaning, the entry says so. Where a rule differs between the NFL, college and high school, check the rulebook for your level. You can see most of these ideas in action by following a game on our live scores page, and each position's players are listed on the team pages and player pages.

The players

• Quarterback: the player who takes the snap, runs the offense on the field, hands off, throws or runs. He usually calls the play in the huddle or relays it from the sideline.
• Running back: a player who lines up in the backfield and mainly carries the ball. Halfback and tailback are older names for the main ball carrier; announcers use them loosely.
• Fullback: a back who is usually bigger than a halfback and whose main job is blocking for the runner, though some also carry or catch the ball. The position is rarer than it once was.
• Wide receiver: a player who lines up near the sideline and runs routes to catch passes. Older terms such as split end (on the line of scrimmage) and flanker (off the line) describe where a receiver stands.
• Slot receiver: a receiver who lines up between the sideline receiver and the offensive line, in the "slot." He often works the middle of the field.
• Tight end: a player who lines up next to the offensive line and does a mix of blocking and pass catching.
• H-back: a hybrid who lines up off the line, often moving between tight end, fullback and receiver roles. The name comes from the letter H, and the details vary by team.
• Offensive line: the five big players up front. The center snaps the ball, the guards line up on either side of the center, and the tackles line up outside the guards. Their job is to block.
• Skill positions: shorthand for the players who usually carry or catch the ball: quarterback, running backs, receivers and tight ends.
• Eligible receiver: a player allowed to catch a forward pass. Our guide to eligible and ineligible receivers explains who qualifies.

The line and the formation

• Line of scrimmage: the imaginary line across the field where the ball is placed before each play. Neither team may cross it before the snap.
• Backfield: the area behind the line of scrimmage on the offense's side, where the quarterback and running backs line up.
• Formation: the arrangement of the eleven offensive players before the snap.
• Under center: the quarterback stands directly behind the center and takes the ball from his hands.
• Shotgun: the quarterback stands several yards behind the center and takes a longer snap. It gives him more time to see the field and is common on passing downs.
• Pistol: a hybrid in which the quarterback stands closer to the line than in the shotgun, with a running back directly behind him.
• I-formation: a formation with two backs lined up one behind the other in a straight line behind the quarterback, like the letter I.
• Singleback: a formation with one running back in the backfield, often with extra receivers or tight ends.
• Empty backfield: no running back stands beside or behind the quarterback; everyone else is on the line or spread out as a receiver.
• Trips: three receivers lined up on the same side of the field.
• Bunch: receivers lined up close together, so defenders cannot easily follow each one.
• Stack: two receivers lined up one behind the other, which makes it harder for a defender to jam the one in back.
• Spread: an offense that lines up several receivers across the width of the field to stretch the defense.
• Wildcat: a formation in which a running back, not the quarterback, takes the snap directly.
• Unbalanced line: a formation with more offensive linemen on one side of the center than the other.
• Personnel grouping: a shorthand for who is on the field. "11 personnel" means one running back and one tight end, so three receivers. "12 personnel" means one back and two tight ends. The first digit is the number of backs and the second is the number of tight ends.

Before the snap

• Huddle: the brief gathering where the quarterback relays the play. Teams that skip it run a no-huddle offense, which can tire the defense and limit its substitutions.
• Play clock: the countdown the offense must beat to snap the ball. If it expires, the offense is penalized for delay of game.
• Audible: a change of play called at the line of scrimmage, usually when the quarterback sees a defensive look he wants to beat.
• Cadence: the rhythm and words the quarterback uses to start the play.
• Snap count: the specific moment the center is told to snap, such as "on two."
• Hard count: a cadence with extra emphasis or a change in rhythm, meant to trick a defender into jumping offside.
• Motion: one player moving before the snap, usually to reveal whether the defense is using man or zone coverage, or to create a mismatch. Rules limit motion at every level.
• Shift: two or more players changing positions before the snap. Players must then stop and be set before the ball is snapped.
• Hot route: a route a receiver changes on his own once he sees a blitz, so the quarterback has a fast throw available.

The run game

• Handoff: the quarterback gives the ball directly to a back.
• Pitch or toss: the quarterback tosses the ball backward to a back running parallel to the line. It is a lateral, not a forward pass.
• Hole and gap: the open lane a runner aims for. Gaps are the spaces between offensive linemen, and the holes open when blockers move defenders aside.
• Zone running play: blockers each take whichever defender is in their area, and the runner reads the blocks to choose a lane.
• Gap or power running play: each blocker is assigned a particular defender or gap, and a pulling lineman often leads the way.
• Pulling: a guard or tackle leaves his spot and runs along the line to lead a play toward the sideline.
• Lead blocker: a back or lineman who runs ahead of the ball carrier to clear defenders.
• Sweep: a run aimed around the edge of the defense, with blockers leading.
• Counter: a play that starts to flow one direction and then cuts back, using pulling linemen to attack the other side.
• Draw: a run disguised as a pass. The quarterback drops back, then hands off to a back running up the middle.
• Trap: a play in which a defender is deliberately left unblocked by one lineman and then blocked by a pulling lineman from the side.
• Quarterback sneak: the quarterback follows the center straight ahead for a short gain, used in very short-yardage situations.
• Kneel-down: the quarterback takes the snap and kneels to end the play without risking a fumble, typically to run out the clock while leading.
• Read option: the quarterback reads one defender and decides whether to keep the ball or hand off to the back.
• Yards after contact: the yards a runner gains after a defender first touches him.

The pass game

• Dropback: the quarterback steps back from the line to set up a pass.
• Pocket: the protected area the offensive line forms around the quarterback as he throws.
• Pass protection: all the blocking assignments that keep pass rushers away from the quarterback.
• Play-action: a fake handoff before a pass, meant to draw defenders toward the run.
• Rollout and bootleg: plays in which the quarterback leaves the pocket by design. In a bootleg, he fakes a handoff one way and then runs the other way, away from the flow of the play.
• Screen pass: a short throw behind the line of scrimmage to a receiver or back, with blockers waiting in front of him. The linemen let rushers by on purpose and then run to block.
• Check-down: a short, safe throw to a back or tight end when the primary targets are covered.
• Progression: the order in which the quarterback looks at his receivers, such as first, second and third reads.
• Scramble: the quarterback runs from pressure, either to throw or to gain yards.
• Sack: a tackle of the quarterback behind the line of scrimmage on a pass play.
• Completion and incompletion: a completion is a pass caught by a receiver; an incompletion falls to the ground or is knocked down.
• Target: a pass thrown toward a particular receiver, whether or not he catches it. Fantasy managers track targets closely; see our fantasy football section.
• Air yards and yards after catch: air yards measure how far the ball travels in the air; yards after the catch measure what the receiver gains after he catches it.
• Run-pass option (RPO): a play in which the quarterback decides after the snap whether to hand off or throw, based on a defender's movement.
• Spike: the quarterback throws the ball straight into the ground to stop the clock. It counts as an incomplete pass and costs a down.
• Hail Mary: a long desperation pass into a crowd in the end zone, usually thrown at the end of a half.

Routes in one table

A route is the path a receiver runs. The full tree is in our guide to every route a receiver runs; this table covers the names you will hear most.

Drives and situations

• Drive: the series of plays from when an offense gets the ball until it scores, punts, loses the ball or time runs out.
• Series: a set of downs. A new series begins each time the offense earns a first down.
• Three-and-out: a drive in which the offense fails to gain a first down in three plays and then punts.
• Moving the chains: gaining a first down. The phrase comes from the chain crew, which marks how far the offense must go.
• The sticks: slang for the markers on the sideline that show the line to gain.
• Red zone: the area inside the opponent's 20-yard line. Scoring chances are high there but space is tight.
• Goal-to-go: a situation in which the line to gain is the goal line.
• Short yardage: a situation needing only a yard or two, which favors power running plays.
• Two-minute drill: the hurry-up offense used at the end of a half, when the clock matters most.
• Four-minute offense: running plays and staying in bounds late in a game to burn time while holding a lead.
• Explosive play: a long gain. The threshold varies; analysts often use a number of yards for runs and a larger number for passes, so check the source.

Terms people mix up

• Handoff versus pitch: a handoff goes directly into the runner's hands; a pitch is a backward toss.
• Sack versus tackle for loss: a sack is a tackle of the quarterback behind the line on a pass play. A tackle for loss is a tackle of any ball carrier behind the line.
• Rollout versus bootleg: both take the quarterback out of the pocket. A bootleg begins with a fake handoff in the opposite direction.
• Series versus drive: a series is a set of downs; a drive can include several series.
• Slot versus split end: the slot receiver lines up inside, off the line; the split end lines up wide on the line.

The short version

• Offensive terms fall into a few groups: players, formations, pre-snap calls, runs, passes, routes and situations.
• Formations are named for where the quarterback and backs stand: under center, shotgun, pistol, I-formation, singleback.
• Personnel groupings use two digits: backs first, tight ends second, with the rest receivers.
• Runs are either zone (read the blocks) or gap (blocker assigned to a defender).
• Play-action, bootlegs and screens are designed to move defenders away from where the ball is going.
• Slang varies, so when two sources disagree, check the rulebook for your level or ask a coach.