- [countable]
a line marking the back of an area of play in a game Topics Sports: ball and racket sportsc2(球类运动场地的)底线,端线 - [countable + singular or plural verb]
(in rugby )橄榄球 the players who form a line across the field behind the scrum or line-out Topics Sports: ball and racket sportsc2组成后卫线的球员