Search Result for "bullet-headed": 
Wordnet 3.0

ADJECTIVE (2)

1. obstinate and stupid;
[syn: bullheaded, bullet-headed, pigheaded]

2. having a small round head; 



WordNet (r) 3.0 (2006):

bullet-headed
    adj 1: obstinate and stupid [syn: bullheaded, bullet-headed,
           pigheaded]
    2: having a small round head