The backbone or spine of an animal, especially used to refer to the part of a meat cut that includes vertebrae; also means a deep ravine or valley.
From Old French 'chine,' from Latin 'spina' (spine); the word entered English in the Middle Ages and has been used both for animal anatomy and geographical features.
The word chine has two completely different meanings—one from butchery and one from geology—showing how the same word can survive by finding new uses in new contexts!
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