The Collaborative International Dictionary
Mysticete
Mysticete \Mys"ti*cete\, n. [Gr. my`stax the upper lip, also, the mustache + kh^tos a whale.] (Zo["o]l.) Any right whale, or whalebone whale. See Cetacea.
Wiktionary
mysticete
n. (context zoology English) Any of the baleen whales (of suborder ''Mysticeti'')