English
lapper
From lap + -er.
A compound of lap + -er
Proto-Germanic *lappô ‘cloth’
Proto-West Germanic *lappō
Old English læppa ‘skirt or flap of a garment’
Middle English lappe
English lap
Today it means
noun One who laps liquid, who takes liquid in with the tongue.
Language periods are conventional ranges, not dates for this word.
Etymograph / lapper