tombstoned

Verb

tombstone (third-person singular simple present tombstones, present participle tombstoning, simple past and past participle tombstoned)

1. (UK, intransitive) 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.
2. 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.
   • Before the contest even started, Slater went down hard in a warmup session. He took a two-wave hold-down in the semifinals, his board tombstoning eerily for all to see, […]2005, Bruce Jenkins, Surfer magazine, (referring to Kelly Slater) http://surfermag.com/features/events/mav05/
3. (transitive, Microsoft Windows) To replace (an object or data) with a tombstone marker.
   • One of the many improvements in Windows 2000 WINS (and NT4 SP4) is the capability to selectively delete or tombstone records.2000, William Boswell, Inside Windows 2000 Server, page 211

See all 12 meanings of tombstone