Tombstone
Part of speech: noun
Definition: A headstone marking the person's grave. The symbol "" marking the end of a proof.
Part of speech: verb
Definition: 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.
Example sentence: A good character is the best tombstone. Those who loved you and were helped by you will remember you when forget-me-nots have withered. Carve your name on hearts, not on marble.
Headstone
Part of speech: noun
Definition: A gravestone, a grave marker: a monument traditionally made of stone placed at the head of a grave.