tomb-stone

Noun

tombstone (plural tombstones)

1. A grave marker, a stone slab or similar object marking a person's grave.
   • True, there's no harm in crying for one's husband, and the tombstone, though plain, was a solid piece of work, and on summer's days when the widow brought her boys to stand there one felt kindly towards her.1922, Virginia Woolf, chapter 2, in Jacob's Room

   Synonyms:

   headstone, gravestone, grave marker

2. The symbol "∎" marking the end of a proof.

   Synonyms:

   halmos

3. (Microsoft Windows) A marker that takes the place of deleted data, allowing for replication of the deletion across servers etc.
   • If you attempt to restore a backup that is older than the tombstone lifetime, it may introduce objects that were deleted […]2008, Laura E. Hunter, Robbie Allen, Active Directory Cookbook, page 739
4. A crashdump.
   • This actually results in a crash dump, which is written to the log and to a tombstone file.2014, Joshua J. Drake, Zach Lanier, Collin Mulliner, Android Hacker's Handbook, page 186
5. An unusual morphological feature on an electrocardiogram indicative of acute myocardial infarction, characterized by a massive ST elevation.
6. A printed advertisement in a newspaper or magazine, typically having unadorned centered text in black and white, enclosed in a simple box.

See all 12 meanings of tombstone