ossuary

noun, plural os·su·ar·ies.

1. a place or receptacle for the bones of the dead.

noun plural -aries

1. any container for the burial of human bones, such as an urn or vault

n.“urn for the bones of the dead,” 1650s, from Late Latin ossuarium “charnel house,” from neuter of Latin ossuarius “of bones,” from Latin os (plural ossua) “bone” (see osseous) on model of mortuarium.