keeper Definition

1. A person who looks after something, eg a collection in a museum.

Thesaurus: guard, jailer, custodian, overseer, manager, supervisor, attendant, governor, warden, caretaker, conservator, defender, warder.
2. A person who looks after animals or birds in captivity.
3. A gamekeeper.
4. colloq
A goalkeeper.
5. A wicketkeeper.
6. An iron or steel bar placed across the poles of a permanent magnet in order to preserve its magnetic properties when it is not in use.
7. The socket that receives the bolt of a lock.
8. A small band of leather, etc on a belt, strap, etc that stops the end from flopping about.