頭を下げろ！
Words
頭
(あたま、かしら)
head; hair (on one's head); mind; brains; intellect; leader; chief; boss; captain; top; tip; beginning; start; head; person; top structural component of a kanji
を
(を)
indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
下げる
(さげる)
to hang; to suspend; to wear (e.g. decoration); to lower; to reduce; to bring down; to demote; to move back; to pull back; to clear (plates); to remove (food, etc. from table or altar)