noun
drinking party; get-together with drinks
A casual social gathering where alcohol is served, often after work or among friends. The focus is on drinking together.
今夜は会社の飲み会がある。
There's a company drinking party tonight.
飲み会の場所はもう決まった？
Have you decided on the place for the get-together?
Compound of 飲み (nomi, 'drinking', the continuative form of 飲む) + 会 (kai, 'meeting' or 'gathering').