[syn: hammerhead, hammerhead shark]
The Collaborative International Dictionary of English v.0.48:
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.
2. (Zool.) A fresh-water fish; the stone-roller.
3. (Zool.) An African fruit bat (Hypsignathus monstrosus);
-- so called from its large blunt nozzle.
WordNet (r) 3.0 (2006):
n 1: a stupid person; these words are used to express a low
opinion of someone's intelligence [syn: dunce,
dunderhead, numskull, blockhead, bonehead,
lunkhead, hammerhead, knucklehead, loggerhead,
muttonhead, shithead, dumbass, 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, hammerhead shark]