(especially in soccer, rugby, or hockey) in a position where playing the ball or puck is not allowed, especially (in soccer) in the attacking half ahead of the ball and having fewer than two defenders nearer the goal line at the moment the ball is played

the attacker looked offside by several yards

his radicalism caught him offside with the law

the fact of being offside in soccer and other sports

the goal was disallowed for offside

the linesman had spotted an offside

the side of a vehicle furthest from the kerb (in Britain, the right)

the rear offside wheel