Etymograph

English

fivehead

Blend of five + forehead.

A blend of five + forehead

Proto-Indo-European *pénkʷe

Proto-Germanic *fimf

Proto-West Germanic *fimf

Old English fīf

Middle English fyf

English five

Proto-West Germanic *forēhaubid

Old English forehēafod

Middle English forhed

English forehead

The story

Wordplay based on adding one to the "fore" (homophonous to four) of forehead, thus implying a brow that is larger than average.

Today it means

noun A large forehead.

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

Etymograph / fivehead