| hump | (noun) something that bulges out or is protuberant or projects from its surroundings | Synonyms: bulge, bump, excrescence, extrusion, gibbosity, gibbousness, jut, prominence, protrusion, protuberance, swelling |
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| humpback | (noun) large whalebone whale with long flippers noted for arching or humping its back as it dives | Synonyms: humpback whale, Megaptera novaeangliae |
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| (noun) a person whose back is hunched because of abnormal curvature of the upper spine | Synonyms: crookback, hunchback |
| (noun) an abnormal backward curve to the vertebral column | Synonyms: hunchback, kyphosis |