Noun humpback has 3 senses
  1. kyphosis, humpback, hunchback - an abnormal backward curve to the vertebral column
    --1 is a kind of spinal curvature
  2. humpback, hunchback, crookback - a person whose back is hunched because of abnormal curvature of the upper spine
    --2 is a kind of cripple
  3. humpback, humpback whale, Megaptera novaeangliae - large whalebone whale with long flippers noted for arching or humping its back as it dives
    --3 is a kind of baleen whale, whalebone whale
    --3 is a member of Megaptera, genus Megaptera
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