Pronunciation: ' bo ̇ - ˌ kl ī n
Function: noun
Date: 1839
1 : a line across a billiard table near one end behind which the cue balls are placed in making opening shots
2 a : one of four lines parallel to the cushions of a billiard table dividing it into nine compartments b : a billiards game that sets restrictions in scoring caroms according to these lines