She's a big beer/wine/coffee 'drinker'. [=she drinks a lot of beer/wine/coffee]
Most of his friends are 'drinkers'.
He's a heavy/moderate 'drinker'.
(..) A great composer. Ah... one of your germans... Let me tell you about one of ours. Hm... There was a priest in our village... A big drinker... When he woke up in the morning... You have orders to kill me, Peter? Hm... Shut up. Shut up. (..)1965 Forest of the Hanged