D defs.my
Entry 3 senses Webster, 1913

orc

/(ôrk)/ · IPA /ɔɹk/
01 n. Any of several cetaceans, especialy the grampus (Grampus griseus) of the dolphin family.
  1. 1.
    Any of several cetaceans, especialy the grampus (Grampus griseus) of the dolphin family.(Zool.) Also: grampus
    “An island salt and bare, The haunt of seals, and orcs, and sea-mews' clang.” — Milton (Par. Lost xi. 835).
  2. 2.
    A mythical monster of varying descriptions; an ogre.(Mythology)
    “Goblins, hobgoblins, and orcs of the worst description.” — J. J. Tolkien (The Hobbit)
  3. 3.
    The orca. See: orca