hammerhead(n = noun.animal) hammerhead shark - medium-sized live-bearing shark with eyes at either end of a flattened hammer-shaped head; worldwide in warm waters; can be dangerous;
A shark of the genus Sphyrna or Zygæna, having the eyes set on projections from the sides of the head, which gives it a hammer shape. The Sphyrna zygæna is found in the North Atlantic. Called also hammer fish, and balance fish. [1913 Webster]
A fresh-water fish; the stone-roller. [1913 Webster]
An African fruit bat (Hypsignathus monstrosus); -- so called from its large blunt nozzle. [1913 Webster]
hammerhead, n.
1 any shark of the family Sphyrinidae, with a flattened head and eyes in lateral extensions of it.
2 a long-legged African marsh-bird, Scopus umbretta, with a thick bill and an occipital crest.