Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
bullet-headed is an adjective meaning "obstinate and stupid". It carries 2 recorded senses.
obstinate and stupid
having a small round head
Definitions, synonyms and semantic relations for bullet-headed come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.