▸ noun
1 a person who manages or looks after something or someone:
I'm your friend, not your keeper.
▪ a guard at a prison or a museum.
▪ short for gamekeeper.
3 a fish large enough to be kept when caught.
▪ informal a person or thing that is valuable and to be cherished:
this disc is a keeper and one that belongs on every serious DVD collector's shelf
if he's a good communicator and a great listener, he's a keeper.
4
▪ a plain ring worn to keep a more valuable one on the finger.
▪ a bar of soft iron placed across the poles of a horseshoe magnet to maintain its strength.