noun A small area of still water, typically one formed naturally.
verb (of water or another liquid) form a pool on the ground or another surface. (the oil pooled behind the quay walls, escaping slowly into the river)
noun A supply of vehicles or goods available for use when needed. (the oldest vehicle in the motor pool) A form of billiards in which the object is to pocket all the balls with a cue ball. There are many versions of the game, e.g. straight pool or eight ball. A group of contestants who compete against each other in a tournament for the right to advance to the next round. An arrangement, illegal in many countries, between competing parties to fix prices or rates and share business in order to eliminate competition.
verb (of two or more people or organizations) put (money or other assets) into a common fund. (they entered a contract to pool any gains and invest them profitably)