pygmy sperm whale

noun

: a toothed whale (Kogia breviceps) of tropical and temperate waters of the northern and southern hemispheres that is bluish-gray to black above with lighter underparts, has a crescent-shaped light marking between the eye and flipper, and may reach up to 12.5 feet (3.7 meters) in length but is typically shorter

Word History

First Known Use

1871, in the meaning defined above

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