tombstone

1. A grave marker, a stone slab or similar object marking a person's grave.
2. The symbol "∎" marking the end of a proof.
3. A marker that takes the place of deleted data, allowing for replication of the deletion across servers etc.
4. A crashdump.
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.
7. A museum plaque or caption displaying information about a work of art or exhibited object.

Plural tombstones