IPA: //ˈpuːlruːm//
KK: /pulˌrum/
A place where people can play pool or billiards, often with several tables available for use.
We spent the evening at the local poolroom, enjoying a few games of billiards.
Poolroom → It is formed from "pool" (from Middle English *pol*, meaning a small body of water or a game played on a table with balls) and "room" (from Old English *rum*, meaning space or area). The word "poolroom" refers to a room designated for playing pool, a game involving balls on a table.
Think of a 'space' ('room') where people play a 'game with balls' ('pool'). This helps you remember that a poolroom is a place for playing pool.