1. noun
a) 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; as, the pools of Solomon
Charity will hardly water the ground where it must first fill a pool.
b) A small body of standing or stagnant water; a puddle
The sleepy pool above the dam.
2. verb
a) to put together; contribute to a common fund, on the basis of a mutual division of profits or losses; to make a common interest of; as, the companies pooled their traffic
b) to combine or contribute with others, as for a commercial,speculative, or gambling transaction
Wikipedia foundation.