Pronunciation: (ôf'sīd', of'-), [key]
1. Sports.illegally beyond a prescribed line or area or in advance of the ball or puck at the beginning of or during play or a play: The touchdown was nullified because the offensive left tackle was offside.
2. with or in doubtful propriety or taste; risqué: an offside joke.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.