What does "humpback" mean?

Humpback: A humpbacked person; a hunchback.

Additional senses

  1. 2.(Zoöl.) (a) Any whale of the genus Megaptera, characterized by a hump or bunch on the back. Several species are known. The most common ones in the North Atlantic are Megaptera longimana of Europe, and M. osphyia of America; that of the California coasts is M. versabilis. (b) A small salmon (Oncorhynchus gorbuscha), of the northwest coast of America.

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