'crack of doom' definitions:

(New Testament) day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives [syn: Judgment Day, Judgement Day, Day of Judgment, Day of Judgement, Doomsday, Last Judgment, Last Judgement, Last Day, eschaton, day of reckoning, doomsday, crack of doom, end of the world]