D defs.my
Entry 1 sense Webster, 1913

offside

· IPA /ɒfˈsaɪd/
01 adj. Illegally beyond a prescribed line or area or ahead of the ball or puck; -- in sports such as football or hockey; as, the touchdown was nul…
  1. 1.
    Illegally beyond a prescribed line or area or ahead of the ball or puck; -- in sports such as football or hockey; as, the touchdown was nullified because the left tackle was offside.(Sports)