balklines

1.【体】波克线,田赛起点线,起跳线

2.【台】发球线;波克线

1.a straight line parallel to the end of a billiard table, from behind which opening shots with the cue ball are made

2.one of four lines parallel to the edges of a billiard table that divide it into the central area and eight smaller compartments that are used in a particular variety of billiards