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Meanings

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Thesaurus

1 noun · the backbone of an animal,... backbonespinechine bone
2 verb · to remove or cut through... deboneremove the backbone
3 noun · in boatbuilding, a sharp... hull angle

The backbone and meat senses came around 1300 from Anglo-French achine and Old French eschine ("backbone"), a word of uncertain, possibly Germanic origin. The nautical sense extends the image of a spine or ridge. The geographical ravine is a separate inherited word related to Old English cinu ("cleft, fissure").

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