(sports) Illegally ahead of the ball or puck in the attacking zone.
(football) Illegally beyond the line of scrimmage when the ball is snapped or ahead of the ball when the ball is kicked on a kickoff.
An offside motion or play.
(sports) Not in the proper position for play.
- (football) Over the line of scrimmage or otherwise ahead of the ball before the play has begun, and hence subject to penalty.
- (ice hockey) Moving into the attacking zone ahead of the puck.
Into an offside position.
To jump offside.
An offside play.