(US) A building where visitors pay to play billiards (pool).

plural of pool hall

An area that is inundated during periods of flooding to prevent inundation elsewhere. / A swimming pool that is filled by water at high tide and remains filled at low tide.

(US, politics, journalism) An event in which photographers and other members of the news media are allowed to visit briefly with the US President or other top US government officials, especially on the occasion of a meeting with leaders or high-level officials from other countries.

A pocket billiards game using numbered markers, called peas or pills, and a standard set of sixteen pool balls. Players draw peas at random from a shake bottle, which assigns to them the correspondingly numbered pool ball, kept secret from their opponents, but which they must pocket in order to win the game.

(leisure) A mini-wading pool, usually movable.

(US) A variant of bar billiards

(law) A consortium of companies which agree to crosslicense patents relating to a particular technology, often to avoid the problem of blocking patents.

Synonym of ball pit

A swimming pool in which there are artificially generated, reasonably large waves, similar to the ocean's.