[1] : The Collaborative International Dictionary of English v.0.48

hippocampus \hip`pocam"pus\, n. l., the sea horse, gr. ? a
   hippocampus in senses 1 and 2; "i`ppos horse + ? to bend.
   1. class. myth. a fabulous monster, with the head and fore
      quarters of a horse joined to the tail of a dolphin or
      other fish hippocampus brevirostris, -- seen in
      pompeian paintings, attached to the chariot of neptune.
      --fairholt.
      1913 webster

   2. zool. a genus of lophobranch fishes of several species
      in which the head and neck have some resemblance to those
      of a horse; -- called also sea horse.
      1913 webster

   note: they swim slowly, in an erect position, and often cling
         to seaweeds by means of the incurved prehensile tail.
         the male has a ventral pouch, in which it carries the
         eggs till hatched.
         1913 webster

   3. zool. a name applied to either of two ridges of white
      matter in each lateral ventricle of the brain. the larger
      is called hippocampus major or simply hippocampus. the
      smaller, hippocampus minor, is called also ergot and
      calcar.
      1913 webster
see also:
hippocampus brevirostris sea horse ergot calcar 

[2] : The Collaborative International Dictionary of English v.0.48

sea horse \sea" horse`\
   1. 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.
      1913 webster

   2. zool.
      a the walrus.
      b any fish of the genus hippocampus.
          1913 webster

   note: in a passage of dryden's, the word is supposed to refer
         to the hippopotamus.
         1913 webster
see also:
hippocampus 

[3] : WordNet (r) 2.0

sea horse
     n 1: either of two large northern marine mammals having ivory
          tusks and tough hide over thick blubber syn: walrus,
          seahorse
     2: small fish with horselike heads bent sharply downward and
        curled tails; swim in upright position syn: seahorse
see also:
walrus seahorse 

Caribbean Sea >> C Words
Caribbean Sea, definition of term: Caribbean Sea
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Caspian Sea >> C Words
Caspian Sea, definition of term: Caspian Sea
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Coral Sea >> C Words
Coral Sea, definition of term: Coral Sea
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Crazy Horse >> C Words
Crazy Horse, definition of term: Crazy Horse
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Black Sea >> B Words
Black Sea, definition of term: Black Sea
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Black Horse >> B Words
Black Horse, definition of term: Black Horse
black+horse_pag1.html

Aegean Sea >> A Words
Aegean Sea, definition of term: Aegean Sea
aegean+sea_pag1.html

At Sea >> A Words
At Sea, definition of term: At Sea
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Baltic Sea >> B Words
Baltic Sea, definition of term: Baltic Sea
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Adriatic Sea >> A Words
Adriatic Sea, definition of term: Adriatic Sea
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