Noun
carom billiards (uncountable)
A family of billiards games generally played on cloth-covered, pocketless tables, which often feature heated slate beds, typically having as the objective to score points or "counts" by caroming one's own cue ball off both the opponent's cue ball and the object ball(s) on a single shot.
Carom billiards balls are larger than pool balls, having a diameter of 61.5 mm ( 2 7 16 in), and come as a set of two cue balls (one colored or marked) and an object ball (or two object balls in the case of the game four-ball ). Source: Internet