— hammerheaded , adj.
/ham"euhr hed'/ , n.
1. the part of a hammer designed for striking.
2. a shark of the genus Sphyrna, esp. S. zygaena, having the head expanded laterally so as to resemble a double-headed hammer, sometimes dangerous to swimmers.
3. Also called hammerkop /ham"euhr kop'/ . a brown heronlike African bird, Scopus umbretta, having the head so crested as to resemble a claw hammer.
4. See flatheaded borer .
5. Slang. blockhead; dunce; lout.
[ 1525-35; HAMMER + HEAD ]