ror·qual (rôr'kwəl) n. Any of several baleen whales of the family Balaenopteridae having longitudinal grooves on the throat and a small, pointed dorsal fin. Also called razorback.
[French, from Norwegian rørhval, from Old Norse reydharhvalr : reydhr, rorqual (from raudhr, red; see reudh- in Indo-European roots) + hvalr, whale.]