Rack (billiards) ball, the ball is placed on the highest available spot. If there is no available spot, it is placed as close to its own spot as possible in a direct line between that spot and the top (black end) cushion, without touching another ball. If there is no room this side of the spot, it will be placed as close to the spot as possible in a straight line towards the bottom cushion, without touching another ball. Rack (billiards) A rack (sometimes called a triangle) is a piece of equipment that is used to place billiard balls in their starting
Carom billiards is thought to be traceable to 18th-century France. There is a large array of carom billiards disciplines. Some of the more prevalent today and historically are (chronologically by apparent date of development): "straight rail", "cushion caroms", "balkline", "three-cushion billiards" and "artistic billiards". There are many other carom billiards games, predominantly intermediary or offshoot games combining elements of those already listed, such as the "champion's game", an intermediary game between straight rail and balkline, as well as games which are hybrids of carom billiards and pocket billiards, such as "American four-ball billiards", and "cowboy pool". "English billiards" played on a snooker