伏す

ふす
to bend down
to bow down
to prostrate oneself

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ふす【伏す】

〔うつ向く〕 bend [bow] down; 〔横たわる〕 lie down; 〔腹ばいになる〕 fall prostrate. [⇒ふせる¹]

●あおむけに伏す lie on one's back [facing upward]

・地面[床の上]にぴたりと伏している be flat on the ground [floor]; be prostrate

・病床に伏す lie flat on one's sickbed

・伏して願う bow [bend] low [right down] in supplication.