English
headfold
From head + fold.
Proto-Indo-European *kap- ‘head’
…
Proto-Germanic *haubudą ‘head’
Proto-West Germanic *haubud
Old English hēafod ‘head’
Middle English heed ‘head’
English head
Proto-Indo-European *pel- ‘to fold’
Proto-Germanic *falþaną ‘to fold’
Proto-West Germanic *falþan ‘to fold’
Old English fealdan ‘to fold’
Middle English folden ‘to fold’
English fold
Today it means
noun A ventral fold formed by growth of the embryonic head
Language periods are conventional ranges, not dates for this word.
Etymograph / headfold