keeper

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keeper /ˈkiːpɚ/ noun
plural keepers
keeper
/ˈkiːpɚ/
noun
plural keepers
Learner's definition of KEEPER
[count]
: a person whose job is to guard or take care of something or someone
see also doorkeeper, gamekeeper, gatekeeper, shopkeeper, storekeeper, zookeeper
British : curator
US, informal : something or someone that is worth keeping : something or someone that is good, valuable, etc.
American football : a play in which the quarterback runs with the ball

finders keepers (losers weepers)

see finder