IPA: /ˈtæp.ruːm/
KK: /ˈtæpˌrum/
A place where drinks, especially beer, are served, often attached to a brewery.
We enjoyed a cold beer at the local taproom after the brewery tour.
Taproom → It is formed from "tap" (from Old English *tæppa*, meaning to draw liquid) and "room" (from Old English *rum*, meaning space or area). A taproom is a space where liquid, particularly beer, is drawn and served.
Think of a place where you 'draw' ('tap') drinks in a 'space' ('room') — that's what a taproom is.