ハンプバックMeanings1nounhumpback whale; humpback (fish)Refers specifically to the humpback whale (ザトウクジラ) or, less commonly, to other humpbacked fish. In everyday use, it almost always means the whale.See also: ザトウクジラハワイでは冬ふゆにハンプバックが見みられる。In Hawaii, you can see humpback whales in winter.