From Longman Dictionary of Contemporary Englishquaffquaff /kwɒf, kwɑːf $ kwɑːf, kwæf/ verb [transitive] literary DFDto drink a lot of something quickly SYN knock back Wedding guests quaffed champagne.→ See Verb table
Examples from the Corpus
quaff• A score of Brother witnesses sat on elevated thrones quaffing from other such steins, brought by Servitors.• The people we asked didn't much fancy the idea of eating lasagne and quaffing Lambrusco in an old lavatory.• The chauffeurs don hats and quaff their drinks in one. 