Rōr'qual, n.

noun

n. [Norw. rorqualus, a whale with folds.] (Zoöl.) A cetaceous mammal or whale of the genus Balenoptera, resembling the common whale, but having a more slender body. It has a dorsal fin, and is characterized by longitudinal folds on the throat and under parts. B. antiquorum, the razor-back, or great northern rorqual, is remarkable for its great length, which sometimes exceeds one hundred feet.

Great Northern Rorqual (Balenoptera antiquorum).

An engraved illustration of a whale swimming through the water. — Great Northern Rorqual (*Balaenop- tera antiquorum*).