tomb

Short definition from Wiktionary

Noun

1. 1
   A small building, or a room within one, 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.
2. 2
   A pit in which the dead body of a human being is deposited.
3. 3
   One who keeps secrets.
4. 4
   Death (literary)

Verb

1. 1
   To bury.

Proper noun

1. 1
   A surname transferred from the given name.