A place for the burial of a corpse (especially beneath the ground and marked by a tombstone) WordNet 3.0 & Open English WordNet

A tomb is a repository for the remains of the dead. Wikipedia

A grave is a location where a dead body is buried or interred after a funeral. Wikipedia

Repository for the remains of the dead. Wikipedia Disambiguation

Location where a dead body is buried. Wikipedia Disambiguation

Location where one dead person or a limited amount of people are buried Wikidata

Burial place Wikidata

A place (commonly marked with a headstone) where one or more people are buried (usually in a coffin underneath the ground). OmegaWiki

Any place of interment; a tomb; a sepulcher. Wiktionary

A small building (or "vault") for the remains of the dead, with walls, a roof, and (if it is to be used for more than one corpse) a door. It may be partly or wholly in the ground (except for its entrance) in a cemetery, or it may be inside a church proper or in its crypt. Single tombs may be permanently sealed; those for families (or other groups) have doors for access whenever needed. Wiktionary

Small building or vault for the remains of the dead. Wiktionary (translation)