English

horseback

Horseback comes from Middle English horsbak.

attested reconstructed ? uncertain or disputed

Lineage

Formed from horse + back

Proto-Germanic *hrussą ‘horse’

Proto-West Germanic *hross ‘horse’

Old English hors ‘horse’

Middle English hors ‘a horse’

English horse

Proto-Germanic *baką ‘back’

Proto-West Germanic *bak

Old English bæc

Middle English bak ‘the back’

English back

Every English word from Middle English horsbak

noun The back of a horse.

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