foul line

foul-line的词性：
n.（名词）

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.
【棒球】 边线：由本垒起通过一至三垒直到外场的两条边线之一

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.
【体育运动】 限制线：地滚球或网球等限制选手活动的线