Definition of "offside"

offside

/ɒfˈsaɪd/

adjective
comparative more offside, superlative most offside
1. (sports) In an illegal position ahead of the ball, puck, etc.
2. (by extension, slang) out of bounds.
  Quotations
  [Verse 2:Kano]:On-sight, thought he was onside, innit. Saw them guys, no shots fired innit. If you ain't real then don't ride, innit. That postcode, that's offside, innit.
  2016 March 4, “3 Wheel-Ups” (track 4), in Made in the Manor‎, performed by Kano (British musician),Giggs (rapper),Wiley (musician)
3. (US) To the side of the road, past the curb and sidewalk.
4. (bridge) Unfavourably located, from the point of view of the player taking a finesse.
5. To the side of a boat, opposite the primary side on which one paddles.
noun
plural offsides
1. (sports) An offside play.
2. (Britain, Australia) The side of a road vehicle furthest from the kerb: the right side if one drives on the left of the road.
  Quotations
  They put a stock of candle-ends into the lantern, hung the latter to the off-side of the load, and directed the horse onward, walking at his shoulder at first during the uphill parts of the way, in order not to overload an animal of so little vigour.
  1891, Thomas Hardy, Tess of the d'Urbervilles, volume 1, London: James R. Osgood, McIlvaine and Co., page 50
3. The right-hand side of a working animal such as a horse or bullock, especially when in harness.
4. (Britain, of a canal) The side opposite the towpath.