當頭

Adverb

 * 1) right on someone's head; overhead; head on; in someone's face; directly

Verb

 * 1) to befall; to happen; to be imminent; to be facing; to be confronting
 * 2) to put first; to put as a priority; to consider important

Noun

 * 1) pawn; something pawned; collateral; security; pledge