A device that grinds material very finely by means of a horizontally rotating drum containing ceramic or metal balls

Alternative form of ballgown

plural of ball gown

(snooker) An instance where the cue ball is touching a potential object ball. If the player hits the ball in question, it is a foul shot.

plural of moth-ball

plural of moth ball

Alternative spelling of mothball

Alternative spelling of mothball

plural of eye-ball

Obsolete spelling of eyeball