AskDefine | Define hammerhead

Dictionary Definition



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]

User Contributed Dictionary



  1. The portion of a hammer containing the metal striking face (also including the claw or peen if so equipped).
  2. Any of various sharks of the genus Sphyrna or Zygaena having the eyes set on projections from the sides of the head, which gives it a hammer shape.
  3. A fresh-water fish; the stone-roller in the minnow family Cyprinidae.
  4. An African fruit bat Hypsignathus monstrosus, so called from its large blunt nozzle.



Extensive Definition

Hammerhead may refer to:
In zoology:
  • Hammerhead sharks (genus Sphyrna), of which there are nine known species.
  • Hammerkop (Scopus umbretta), a bird of order Ciconiiformes, may also be known as a hammerhead
In music:
In fiction:
In military history:
  • USS Hammerhead, the name of two ships in the United States Navy:
    • USS Hammerhead, (SS-364), a Balao-class submarine, commissioned in 1944.
    • USS Hammerhead, (SSN-663), a Sturgeon-class submarine, commissioned in 1968 and struck in 1995.
In sports:
In games:
In other categories:
hammerhead in French: Hammerhead
hammerhead in Portuguese: Cabeça-de-martelo (desambiguação)
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