Hammerhead

2 definitions found

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

  Hammerhead \Ham"mer*head`\ (-h[e^]d`), n.
     1. (Zool.) A shark of the genus {Sphyrna} or {Zyg[ae]na},
        having the eyes set on projections from the sides of the
        head, which gives it a hammer shape. The {Sphyrna
        zyg[ae]na} is found in the North Atlantic. Called also
        {hammer fish}, and {balance fish}.


        [1913 Webster]
  
     2. (Zool.) A fresh-water fish; the stone-roller.
        [1913 Webster]
  
     3. (Zool.) An African fruit bat ({Hypsignathus monstrosus});
        -- so called from its large blunt nozzle.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  hammerhead
       n 1: these words are used to express a low opinion of someone's
            intelligence [syn: {dunce}, {dunderhead}, {numskull}, {blockhead},
             {bonehead}, {lunkhead}, {knucklehead}, {loggerhead}, {muttonhead},
             {shithead}, {fuckhead}]
       2: the striking part of a hammer
       3: medium-sized live-bearing shark with eyes at either end of a
          flattened hammer-shaped head; worldwide in warm waters;
          can be dangerous [syn: {hammerhead shark}]