adj [usu pred 通常作表语], adv (sport 体) (of a player in football, hockey, etc) in a position where the ball may legally be played (ie behind the ball or with the necessary number of opponents between the player and the goal) （指足球、曲棍球等运动中的球员）不越位, 非越位
*He was definitely onside when he scored that goal. 他射门得分时, 显然并未越位.
* The referee declared him onside. 裁判宣布他没有越位. Cf 参看 offside1.
in a position where you are allowed to play the ball in sports such as football