Nouns

(n)poolan excavation that is (usually) filled with water
(n)pond, poola small lake“the pond was too small for sailing”
(n)poolan organization of people or resources that can be shared“a car pool”, “a secretarial pool”, “when he was first hired he was assigned to the pool”
(n)consortium, pool, syndicatean association of companies for some definite purpose
(n)poolany communal combination of funds“everyone contributed to the pool”
(n)pool, puddlea small body of standing water (rainwater) or other liquid“there were puddles of muddy water in the road after the rain”, “the body lay in a pool of blood”
(n)pool, kittythe combined stakes of the betters
(n)pool, puddlesomething resembling a pool of liquid“he stood in a pool of light”, “his chair sat in a puddle of books and magazines”
(n)pool, pocket billiardsany of various games played on a pool table having 6 pockets

Verbs

(v)poolcombine into a common fund“We pooled resources”
(v)pooljoin or form a pool of people