English

tree rat

From tree + rat.

A compound of tree + rat

Proto-Indo-European *dóru

Proto-Germanic *trewą

Proto-West Germanic *treu

Old English trēo ‘tree’

Middle English trau

English tree

Proto-Germanic *rattaz

Proto-West Germanic *ratt

Old English ræt

Middle English raat

English rat

Today it means

noun Any of very many diverse rodents

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

Etymograph / tree rat