Definitions
1.nounA 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.
2.nounA pit in which the dead body of a human being is deposited; a grave.
3.nounOne who keeps secrets.
4.verbTo bury.