ˈ ̷ ̷ˌ ̷ ̷ noun
1. : a line across a billiard table near one end behind which the cue balls are placed in lagging for lead and making opening shots (as in English billiards, pool, or bagatelle)
2.
a. : one of four lines drawn parallel to and 14 or 18 inches from the cushions of a billiard table dividing it into nine compartments
b. : a carom billiards game that sets restrictions (as in scoring) determined by these lines ; specifically : the billiard game in which it is ruled that if the two object balls rest in one of the eight compartments formed by the cushions and these lines at least one of the balls must be driven out at the second shot or sometimes at each shot