A variation of the game of pool. / (slang) The act of manipulating one's genitalia through a trouser pocket; masturbation.

(philosophy) The set of all memes present in a given human population, in an analogy to gene pool.

A pool, often inflatable, only able to contain enough water to paddle as opposed to swim.

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

plural of pool hall

A social gathering around, and in, a swimming pool.

plural of pool party

plural of patent pool

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

plural of motor pool