Old English drincan "to drink," also "to swallow up, engulf" (class III strong verb; past tense dranc, past participle druncen), from Proto-Germanic *drengkan (cf. Old Saxon drinkan, Old Frisian drinka, Dutch drinken, Old High German trinkan, German trinken, Old Norse drekka, Gothic drigkan "to drink"), of uncertain origin, perhaps from a root meaning "to draw." Not found outside Germanic.
Most Indo-European words for this trace to PIE *po(i)- (cf. Greek pino, Latin biber, Irish ibim, Old Church Slavonic piti, Russian pit'; see imbibe).
The noun meaning "beverage, alcoholic beverage" was in late Old English.
To drink like a fish is first recorded 1747.