1. Baseball Either of two straight lines extending from the rear of home plate to the outer edge of the playing field and indicating the area in which a fair ball can be hit.
2. Basketball A line 15 feet in front of each backboard from which players shoot foul shots.Also called free-throw line
【篮球】 罚球线：距篮球蓝板15英尺的罚球线，运动员站在此线上罚球也作 free-throw line
3. Sports A boundary limiting the permissible movements of a player, as on a bowling alley or in a field event.