• synonyms

sea horse

or sea·horse

  1. any fish of the genus Hippocampus, of the pipefish family, having a prehensile tail, an elongated snout, and a head bent at right angles to the body.
  2. a fabled marine animal with the foreparts of a horse and the hind parts of a fish.
  3. a walrus.
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Origin of sea horse

1425–75; late Middle English sehors walrus; compare German Seepferd
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sea-horse

Historical Examples of sea-horse

  • Others, like the cat-fish and sea-horse, are rare—in England, at any rate.

    Little Folks (Septemeber 1884)


  • The animal is sometimes known as the sea-horse, and also as the morse.

  • Amongst them invariably appears a representation of a sea-horse or a dolphin.

    Portrait Miniatures

    George C. Williamson

  • Belfast has the sea-horse for sinister supporter and also for crest.

  • In what ways is the Sea-horse so different from most other fish?

    Within the Deep

    R. Cadwallader Smith

British Dictionary definitions for sea-horse

sea horse

  1. any marine teleost fish of the temperate and tropical genus Hippocampus, having a bony-plated body, a prehensile tail, and a horselike head and swimming in an upright position: family Syngnathidae (pipefishes)
  2. an archaic name for the walrus
  3. a fabled sea creature with the tail of a fish and the front parts of a horse
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for sea-horse


late 15c., "walrus," from sea + horse (n.); also see walrus. Also in heraldry as a fabulous animal withy the foreparts of a horse and the tail of a fish. Main modern sense in zoology is attested from 1580s.

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Online Etymology Dictionary, © 2010 Douglas Harper