Wiktionary
free ball
alt. (context snooker English) A situation in which a player can play on any ball desired when snookered after a foul shot; also, that desired ball. n. (context snooker English) A situation in which a player can play on any ball desired when snookered after a foul shot; also, that desired ball. vb. To wear nothing under a pair of trousers.
Usage examples of "free ball".
Callahan doesn't know the difference between a dead ball and a free ball.