adjective
(sports) Not in an offside position; In the part of the playing area where one can legally play the ball, puck, etc.
(by extension, slang) Within bounds.
On the side of a vehicle from which the driver, paddler, etc. propels it.
(bridge) Favourably located, from the point of view of the player taking a finesse.
In agreement or support; on board.
noun
(sports) The portion of the playing area where one can legally play the ball, puck, etc.
The side of a vehicle on which the driver primarily propels it.