hump back


a back that is humped in a convex position.

1690–1700; apparently back formation from humpbacked Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
humpback (ˈhʌmpˌbæk)
1.  another word for hunchback
2.  Also called: humpback whale a large whalebone whale, Megaptera novaeangliae, closely related and similar to the rorquals but with a humped back and long flippers: family Balaenopteridae
3.  a Pacific salmon, Oncorhynchus gorbuscha, the male of which has a humped back and hooked jaws
4.  (Brit) Also called: humpback bridge a road bridge having a sharp incline and decline and usually a narrow roadway
[C17: alteration of earlier crumpbacked, perhaps influenced by hunchback; perhaps related to Dutch homp lump]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

humpback hump·back (hŭmp'bāk') or hunch·back (hŭnch'-)
See kyphosis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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