pool
/pul/
A small and rather deep collection of (usually) fresh water, as one supplied by a spring, or occurring in the course of a stream; a reservoir for water.
the pools of Solomon
A small body of standing or stagnant water; a puddle.
A supply of resources.
There is a limited pool of candidates from which to choose the new manager.
(by extension) A set of resources that are kept ready to use.
A small amount of liquid on a surface.
a pool of blood
A localized glow of light.