English

roundback

From round + back.

A compound of round + back

Old Northern French rount

Middle English round ‘spherical, round’

English round

Proto-Germanic *baką ‘back’

Proto-West Germanic *bak

Old English bæc

Middle English bak ‘the back’

English back

Today it means

noun Kyphosis.

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

Etymograph / roundback