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English definition of “pool”

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pool

noun uk   /puːl/ us  

pool noun (LIQUID)

B2 [C] a small area of usually still water: We looked for crabs in the rock pools along the seashore.B2 [C] a small amount of liquid on a surface: a pool of blood/oil figurative a pool of lightA2 [C] a swimming pool : I spent most of my holiday lying/sunbathing by the pool.
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pool noun (COLLECTION)

[C] a number of people or a quantity of a particular thing, such as money, collected together for shared use by several people or organizations: Patrick crashed a Ford that he'd borrowed from the car pool at work. As unemployment rises, the pool of cheap labour increases.
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pool noun (MONEY)

[C] in some card games, an amount of money that is collected from all the players and received by the player who wins the game [C] US the money risked by a number of people on the result of a game or event: a baseball/football/hockey pool the office pool Who won the pool?the pools [plural] ( also football pools) UK a type of gambling in which people risk a small amount of money and try to guess the results of football matches correctly and win a lot of money: They do the pools every week.

pool noun (GAME)

B1 [U] a game in which two people use cues (= long, thin poles) to hit 16 coloured balls into six holes around the edge of a large table covered in soft cloth: a pool table/room/hall mainly US informal Do you want to shoot (= play) some pool?
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pool

verb [T] uk   /puːl/ us  
to collect something such as money in order for it to be used by several different people or groups: Three schools in Putney have pooled their resources/money in order to buy an area of waste ground and turn it into a sports field.
(Definition of pool from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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