the.com/tombstone

means A carved stone marker set at a grave to identify who is buried there and commemorate them with name, dates, and often a brief epitaph.

from A straightforward compound of 'tomb' (from Greek 'tymbos,' a burial mound, filtered through Latin and French) and 'stone,' an old Germanic word for rock. The combined term emerged in English to distinguish the stone slab marking a grave from the tomb or burial chamber itself — practical, literal, no trickery in it, which makes it almost funny next to the solemn job the object actually does.