tomb

Etymology

John R. Tanner's tomb]] From Middle English tombe, toumbe, borrowed from Old French tombe, from Latin tumba from Ancient Greek τύμβος (túmbos, “a sepulchral mound, tomb, grave”), probably from Proto-Indo-European *tewh₂- (“to swell”). The verb is from Middle English tomben.

noun

1. 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.
2. A pit in which the dead body of a human being is deposited; a grave.
3. One who keeps secrets.
   I never told anyone about it. You're the first, except Ivan, of course—Ivan knows everything. He knew about it long before you. But Ivan's a tomb. 1912, Fyodor Dostoyevsky, translated by Constance Garnett, The Brothers Karamazov, published 1880, Book III, chapter 4

verb

1. (transitive) To bury.