noun
: a line connecting the second diamonds of the side rails at the head end of a billiard table that marks a limit on or within which the cue ball is placed in lagging for the break or beginning the game
noun
: a line connecting the second diamonds of the side rails at the head end of a billiard table that marks a limit on or within which the cue ball is placed in lagging for the break or beginning the game
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012