Etymology: Middle English, from Old English pōl; akin to Old High German pfuol pool
Date: before 12th century
(1) a small and rather deep body of usually fresh water
(2) a quiet place in a stream
(3) a body of water forming above a dam
b. something resembling a pool <a pool of light> 2. a small body of standing liquid 3. a continuous area of porous sedimentary rock that yields petroleum or gas 4. swimming pool II. intransitive verb Date: 1626 1. to form a pool 2. of blood to accumulate or become static (as in the veins of a bodily part) III. noun Etymology: French poule, literally, hen, from Old French, feminine of poul cock — more at pullet Date: 1708 1. a. an aggregate stake to which each player of a game has contributed b. all the money bet by a number of persons on a particular event 2. a. a game played on an English billiard table in which each of the players stakes a sum and the winner takes all b. any of various games of billiards played on an oblong table having 6 pockets with usually 15 object balls 3. an aggregation of the interests or property of different persons made to further a joint undertaking by subjecting them to the same control and a common liability 4. a readily available supply: as a. the whole quantity of a particular material present in the body and available for function or the satisfying of metabolic demands b. a body product (as blood) collected from many donors and stored for later use c. a group of people available for some purpose <a shrinking pool of applicants> <typing pool> 5. gene pool 6. a group of journalists from usually several news organizations using pooled resources (as television equipment) to produce shared coverage especially of events to which access is restricted IV. transitive verb Date: 1879 to combine (as resources) in a common pool or effort
New Collegiate Dictionary. 2001.