Having one's head in the clouds: prone to daydreaming, or thinking impractically.

Having unkempt hair

Having a head in the shape of a hammer / (idiomatic) stupid, ignorant

Synonym of nappy: having tightly curled and frizzy hair. / (possibly offensive) Synonym of fuzzy-headed: characterized by vague or confused thinking, dull-witted.

simple past tense and past participle of head off

Characterized by vague or confused thinking: foolish, dull-witted, semi-conscious.

Calm and imperturbable, especially under pressure.

(US, rare, colloquial) A legislative proposal that benefits only a small or non-existent group.

plural of black-headed gull

plural of melon-headed whale