Baize's a coarse woollen (or in cheaper variants cotton) cloth, sometimes called "felt" in American English based on a similarity in appearance. It's most often used on snooker and billiards tables to cover the and . The surface finish of baize isn't very fine (and thus increases friction, perceptibly slowing the balls down, from a player's perspective). Baize's available with and without a perceptible nap; snooker, in which understanding of the effects of the nap's part of the game, uses the… (More on Baize)