A variant spelling of beanfeast; a celebration, party, or festive gathering.
From bean combined with fest (from Old English 'fæst' or Latin 'festivus'). This is an alternate form of beanfeast, possibly shortened or influenced by the German word 'fest' (festival).
'Beanfest' is a rare example of a word that became British slang, got shortened into even more slang, and now sounds almost completely archaic—most people have never heard it!
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