n. a defensive football player who takes a position close behind the linemen
n. (American football) the position of a defensive football player who plays close behind the line of scrimmage
n. 中后卫球员
1. The linebacker made a great tackle to stop the running back.
这名线卫成功铲倒了跑卫，防止了进攻。
2. Our team needs a strong linebacker to improve our defense.
我们的球队需要一名强壮的线卫来增强防守。
3. The coach praised the linebacker for his quick reactions during the game.
教练赞扬了这名线卫在比赛中迅速反应的表现。