Killer-whale meaning

A very large, mostly black dolphin (Orcinus orca) with white patches, that hunts in large packs and preys on large fish, seals, and whales.
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A sea mammal related to dolphins and porpoises.
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Origin of killer-whale

  • Calque or mistranslation of Spanish asesina-ballenas (“whale killer”), referring to their tendency to hunt whales.

    From Wiktionary