English
sawback
From saw + back.
Proto-Germanic *baką ‘back’
Proto-West Germanic *bak
Old English bæc
Middle English bak ‘the back’
English back
Today it means
noun A back (dorsal, spinal, or spinelike aspect) that is a saw or is sawlike in form, as: A ridge or mountain range whose silhouette is suggestive of sawteeth.
Language periods are conventional ranges, not dates for this word.
Etymograph / sawback