- balk, baulk - the area on a billiard table behind the balkline; "a player with ball in hand must play from the balk"
--1 is a kind of area, expanse, surface area
--1 is a part of pool table, billiard table, snooker table - hindrance, deterrent, impediment, balk, baulk, check, handicap - something immaterial that interferes with or delays action or progress
--2 is a kind of difficulty
--2 has particulars:albatross, millstone; bind; drag; obstacle, obstruction; straitjacket - rafter, balk, baulk - one of several parallel sloping beams that support a roof
--3 is a kind of beam
- balk - an illegal pitching motion while runners are on base
--4 is a kind of pitch, delivery