from
WordNet (r) 3.0 (2006)
hammerhead
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}]