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3 definitions found
 for Sperm whale
From The Collaborative International Dictionary of English v.0.48 :

  Sperm \Sperm\, n.[Contr. fr. spermaceti.]
     Spermaceti.
     [1913 Webster]
  
     Sperm oil, a fatty oil found as a liquid, with spermaceti,
        in the head cavities of the sperm whale.
  
     Sperm whale. (Zool.) See in the Vocabulary.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Sperm whale \Sperm" whale`\ (Zool.)
     A very large toothed whale ({Physeter macrocephalus), having
     a head of enormous size. The upper jaw is destitute of teeth.
     In the upper part of the head, above the skull, there is a
     large cavity, or case, filled with oil and spermaceti. This
     whale sometimes grows to the length of more than eighty feet.
     It is found in the warmer parts of all the oceans. Called
     also cachalot, and spermaceti whale.
     [1913 Webster]
  
     Pygmy sperm whale (Zool.), a small whale ({Kogia
        breviceps), seldom twenty feet long, native of tropical
        seas, but occasionally found on the American coast. Called
        also snub-nosed cachalot.
  
     Sperm-whale porpoise (Zool.), a toothed cetacean
        ({Hyperoodon bidens), found on both sides of the Atlantic
        and valued for its oil. The adult becomes about
        twenty-five feet long, and its head is very large and
        thick. Called also bottle-nosed whale.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  sperm whale
      n 1: large whale with a large cavity in the head containing
           spermaceti and oil; also a source of ambergris [syn: sperm
           whale, cachalot, black whale, Physeter catodon]

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