adj.
&
adv.
(in games such as football) occupying a position on the field where playing the ball or puck is not allowed, generally through being between the ball and the opponents' goal.
n.
- the fact of being offside.
-
(usu. the off side)
Brit. the side of a vehicle furthest from the kerb. Compare with nearside.
▸the right side of a horse.