pool
n. countable A1 Beginner Oxford US //ˈpuɫ// UK //pˈuːl// pool
n. a large hole filled with water for swimming. It can also mean a small amount of liquid on the ground, like a pool of rain.
n. an artificial area of water for swimming, or a small accumulation of liquid on a surface. In a broader sense, it refers to a shared supply of resources or people.
The kids spend all afternoon in the swimming pool.
After the heavy storm, a large pool of water remained in the middle of the driveway.
The hotel features an Olympic-sized pool surrounded by lush gardens, providing a tranquil environment for guests to relax during the summer months.
In all likelihood from the noun pool.
Usage
Commonly used in compound nouns like 'swimming pool' or 'car pool'.