Keeper

Noun

1. One who keeps (retains) something.

   "Finders keepers; losers weepers."

2. One who remains or keeps in a place or position.
3. A fruit or vegetable that keeps (remains good) for some time without spoiling.
4. A person or thing worth keeping.
5. A person charged with guarding or caring for, storing, or maintaining something; a custodian, a guard; sometimes a gamekeeper.