Dictionary / Vocabulary / 臥せる
ふせる
to lie down (and sleep); to go to bed (with an illness)
Also written 伏せる
伏せたままでいろ、さもないと撃たれるぞ。
Keep down, or you'll be shot.
彼は床に身を伏せた。
He laid himself flat on the floor.
彼は床に伏せっている。
He is confined to bed now.