伏(ふ)せるto turn over (face down), to lay face down, to lay upside down, to point downwards (eyes, head, etc.), to cast down (eyes), to lie (one's body) face down, to lie flat (on the ground), to conceal, to hide, to keep secret, to place in hiding (e.g. troops for an ambush), to lie down, to retire, to go to bed (with an illness)