(~s)
1.
Your ~s are the tubes in your body through which digested food passes from your stomach to your anus.
N-COUNT
2.
You can refer in a polite way to someone getting rid of the waste from their body by saying that they move, open, or empty their ~s.
N-PLURAL
3.
You can refer to the parts deep inside something such as the earth, a building, or a machine as the ~s of that thing. (HUMOROUS or LITERARY)
...deep in the ~s of the earth...
Lyn went off into the dark ~s of the building.
= recesses
N-PLURAL: the N of n