English
harelip
From hare + lip.
Proto-Indo-European *ḱh₂s-én-
Proto-Germanic *hesô
Proto-West Germanic *hasō ~ *haʀ-
Old English hara
Middle English hare ‘a hare or its meat’
English hare
Proto-Indo-European *leb- ‘to hang loosely, droop, sag’
Proto-Germanic *lepô
Proto-West Germanic *lippjō
Old English lippa
Middle English lippe
English lip
Today it means
noun A congenital malformation of the upper lip, reminiscent of the mouth of a hare.
Language periods are conventional ranges, not dates for this word.
Etymograph / harelip