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'.
(..) - 'Yeah.' - Hiya, Ricki. - All right, mate? 'Did you know him? ' 'No, never met him.' 'Bit of a drinker.' Hangover from hell. 'Bit of a fucking idiot. 'Apparently this Russian, name of Boris, 'was spending high and wide (..)2011 Tinker Tailor Soldier Spy