tombstone

noun

1. a stone that is used to mark a grave

Similar word(s): gravestone, headstone

Definition categories: man–made, memorial, monument, stone

verb

1. (surfing) 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.