(anatomy, uncommon, dated) cephalothorax

(idiomatic) to get mad; to be highly offended; to get pissed off; to get angry; to lose one's cool

(idiomatic) to be sharp; to be keen; to be on the ball; to have a mind like a steel trap; to be clever

Alternative form of 頭がおかしい

(idiomatic) insane, crazy, nuts, out of one's mind

(slang) a forgetful person

long sword with birds' heads carved on the pommel

(idiomatic) to come into mind, to pop into one's head

(idiomatic) to keep in mind

(history, government) the chief of the 内匠寮 (Takumiryō, “Carpentry”)