Meaning of FINDER in English
[noun] [C]The identity of the finder of the treasure and its location are being kept secret, so that treasure hunters do not trespass on the site.(saying) Children sometimes say 'finders keepers (losers weepers)' which means they will keep something that they have found and that the person who did not find it cannot have or share it.
Cambridge English vocab. Кембриджский английский словарь. 2012