Tombstone
From BiblePortal Wikipedia
Webster's Dictionary [1]
(n.) A stone erected over a grave, to preserve the memory of the deceased.
Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]
Bibliography Information McClintock, John. Strong, James. Entry for 'Tombstone'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/encyclopedias/eng/tce/t/tombstone.html. Harper & Brothers. New York. 1870.