1. A small body of standing water (rainwater) or other liquid; SYN. puddle.
2. A hole that is (usually) filled with water.
3. Something resembling a pool of liquid; SYN. puddle.
4. Any of various games played on a pool table having 6 pockets; SYN. pocket billiards.
5. The combined stakes of the betters; SYN. kitty.
6. Any communal combination of funds
7. An organization of people or resources that can be shared
A facility for swimming:; SYN. swimming bath, natatorium.