Doomsday

Dooms″day′ (?), n. [AS. d�mes dāg. See Doom, and Day.] 1. A day of sentence or condemnation; day of death. “My body's doomsday.” Shak.

2. The day of the final judgment.

I could not tell till doomsday. Chaucer.

Doomsday Book. See Domesday Book.