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1. A protuberance; especially, the protuberance formed by a crooked back.
2. A fleshy protuberance on the back of an animal, as a camel or whale.
Origin: Cf. D. Homp a lump, LG. Hump heap, hill, stump, possibly akin to E. Heap. Cf. Hunch.
Source: Websters Vocabulary