Definition of "humpback whale" []

• A baleen whale (Megaptera novaeangliae) having a rounded back and long knobby flippers. Humpback whales communicate using complex, distinctive songs that identify individuals and play an important role in mating. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.