Whale \Whale\, n. [OE. whal, AS. hw[ae]l; akin to D. walvisch, G. wal, walfisch, OHG. wal, Icel. hvalr, Dan. & Sw. hval, hvalfisk. Cf. Narwhal, Walrus.]

(Zo["o]l.) Any aquatic mammal of the order Cetacea, especially any one of the large species, some of which become nearly one hundred feet long. Whales are hunted chiefly for their oil and baleen, or whalebone.

Source: Webster's Revised Unabridged Dictionary (1913)