The noun doom has 1 sense (first 1 from tagged texts)
1. (3) doom, doomsday, day of reckoning, end of the world -- (an unpleasant or disastrous destiny; "everyone was aware of the approaching doom but was helpless to avoid it"; "that's unfortunate but it isn't the end of the world")
Overview of verb doom
The verb doom has 3 senses (first 1 from tagged texts)
1. (10) destine, fate, doom, designate -- (decree or designate beforehand; "She was destined to become a great pianist")
2. sentence, condemn, doom -- (pronounce a sentence on (somebody) in a court of law; "He was condemned to ten years in prison")
3. doom -- (make certain of the failure or destruction of; "This decision will doom me to lose my position")