An eliminator that does away with all traces(noun)
WordNet. Princeton University. 2010.
Use "obliterator" in a sentence
"A guest considers the mohel who will perform the act: He was eighty if he was a day, but he came highly recommended by the temple sisterhood as the foreskin obliterator in town."
"Memory may hold on to horrid incidents, but it's a great obliterator of dull, protracted misery, especially if you help it with heavy drinking."
"Bud's past life had not been much in her thoughts; love, the obliterator, had successfully wiped away the last traces of uneasiness that she had felt, and like all true and good women, she had given him the priceless treasure of her love, not questioning, not seeking to discern what he would have shown her had it seemed right in his mind that she should see."