ossuary (n.)youdaoicibaDictYouDict[ossuary 词源字典]
"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.[ossuary etymology, ossuary origin, 英语词源]