'Humpback whale' definitions:

Definition of 'humpback whale'

From: WordNet
noun
Large whalebone whale with long flippers noted for arching or humping its back as it dives [syn: humpback, humpback whale, Megaptera novaeangliae]

Definition of 'Humpback whale'

From: GCIDE
  • Humpback whale \Hump"back` whale\, n. the humpback[3]. [PJC]