from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A small marine fish of the genus Hippocampus, characteristically swimming in an upright position and having a prehensile tail, a horselike head, and a body covered with bony plates.
  • n. See walrus.
  • n. Mythology An animal, half fish and half horse, ridden by Neptune and other sea gods.
  • n. A large white-capped wave.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of various small marine fish of the genus Hippocampus that have a horselike head and swim upright.
  • n. The walrus.

from the GNU version of the Collaborative International Dictionary of English

  • A fabulous creature, half horse and half fish, represented in classic mythology as driven by sea dogs or ridden by the Nereids. It is also depicted in heraldry. See hippocampus.
  • The walrus.
  • Any fish of the genus Hippocampus.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. small fish with horse-like heads bent sharply downward and curled tails; swim in upright position
  • n. either of two large northern marine mammals having ivory tusks and tough hide over thick blubber


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