reliquary
Reliquary (noun) means a box or case used to keep or show sacred religious objects.
Etymology
Reliquary was borrowed from Middle French reliquaire (modern French reliquaire), from Late Latin reliquiarium, from rēliquia (“a relic”; English relic), a noun use of reliquus (“abandoned, left behind, relict”), from relinquō (“to relinquish”), from re- (“again”) and linquō (“to leave”), from Proto-Indo-European *leykʷ-.