A headstone, tombstone, or gravestone is a stele or marker, usually stone, that is placed over a grave. They are traditional for burials in the Christian, Jewish and Muslim religions, among others. In most cases they have the deceased’s name, date of birth, and date of death inscribed on them, along with a personal message, or prayer, but they may contain pieces of funerary art, especially details in stone relief. In many parts of Europe insetting a photograph of the deceased in a frame is very common.
A gravestone, a grave marker: a monument traditionally made of stone placed at the head of a grave.
The cornerstone or principal stone of a building.
A headstone marking a person’s grave.
The symbol “∎” marking the end of a proof.
A marker that takes the place of deleted data, allowing for replication of the deletion across servers etc.
To take part in tombstoning: to jump into the sea, etc. from a cliff or other high point so as to enter the water vertically straight.
For a surfboard to stand upright half-submerged in the water (like a tombstone, above) because the surfer is underwater with his or her legrope pulled tight. Often this indicates a surfer in difficulty, either held down by the power of a wave or unconscious and unable to get to the surface.
To replace (an object or data) with a tombstone marker.