foul line noun
plural foul lines
plural foul lines
Learner's definition of FOUL LINE
[count]
1
baseball : either one of two straight lines that go from home plate through first and third base on to the edge of the outfield（由本垒起通过一垒至三垒直到外野的）边线，边界 2
basketball : a line from which a player shoots free throws罚球线