English

hen do

From hen + do, by analogy with hen party.

A compound of hen + do

Proto-Indo-European *kan-

Proto-Germanic *hanjō

Proto-West Germanic *hannju

Old English henn

Middle English hen ‘hen, chicken’

English hen

Proto-Indo-European *dʰeh₁- ‘to put’

Proto-Germanic *dōną ‘to do’

Proto-West Germanic *dōn ‘to do’

Old English dōn ‘to do’

Middle English don

English do

Today it means

noun A hen party.

Language periods are conventional ranges, not dates for this word.