English

house dog

From house + dog.

A compound of house + dog

Proto-Germanic *hūsą

Proto-West Germanic *hūs

Old English hūs ‘dwelling’

Middle English hous ‘house’

English house

Old English docga ‘dog’

Middle English dogge ‘an ordinary dog’

English dog

Today it means

noun A dog used to protect a house, a watchdog; (later also) a dog kept as a pet.

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

Etymograph / house dog