Keeper

Keeper may mean:

People

Gamekeeper
Lighthouse keeper
Museum curator
or legal guardian
Zookeeper

Sports

Goalkeeper, a player who protects a goal
Quarterback keeper, a slang term for a play in American football
Wicket-Keeper a position in Cricket behind the wicket

Fiction and games

"The Keeper of Traken", a story in the universe of Doctor Who
Keeper, a parasitic creature in the universe of Babylon 5
Keeper (novel), a sports novel by Mal Peet.
In Homeworld 2, Keepers are deadly destroyers built by the ancient Progenitors.
In the Thief (series) games, a Keeper is a member of a secret society who are charged with "keeping the balance" of power even within The City.
The Keepers (Mass Effect), a fictional artificial species from the BioWare game Mass Effect.
In Quidditch from Harry Potter, a position that defends the goal hoops.

Other

Magnet keeper
Menstrual cup
Strike plate of a door latch

Translation of "Keeper"

Italian: Custode.