Verb (5-dan, す, intransitive)
1. to lie face down; to lie flat (on one's stomach); to fall prostrate
2. to bend down (in submission); to bow down; to prostrate oneself
3. to (crouch) and hide (behind); to conceal oneself
4. to lie down (and sleep); to go to bed (with an illness)
usu. as 臥す
Verb (5-dan, す, transitive)
5. to lay (something) face down; to place upside down; to turn over (face down)
6. to conceal; to hide; to keep secret