Baize is a coarse
woollen (or in cheaper variants
cotton)
cloth, sometimes incorrectly called "
felt" in
American English based on a similarity in appearance. It is most often used on
snooker and
billiards tables to cover the and . The surface finish of baize is not very fine (and thus increases friction, perceptibly slowing the
balls down, from a pool player's perspective), and has a perceptible nap. Baize is the preferred cloth for tables in snooker, in which understanding of the effects of the nap is part of the game. But this cloth is generally not favored for use on high-end pool or carom billiards tables; instead, napless
worsted wool is preferred. For such use it is traditionally
dyed green, in mimicry of a lawn (see Cue sport, "History"), thus the common phrase "the green baize" (though today a wide variety of colors are available for tables, while for other uses such as clothing it has always been available in other colors).
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