From Longman Dictionary of Contemporary Englishblot something ↔ out phrasal verb1 HIDE/MAKE IT HARD TO FIND OR SEEto cover or hide something completely Thick white smoke blotted out the sun.2 if you blot out an unpleasant memory, a thought etc, you deliberately try to forget it She said she took drugs to blot out her problems. → blot→ See Verb table
Examples from the Corpus
blot out• Actually he was a very nice man, cheerful and good-natured, but the other side of him blotted it all out.• Covered the sky, blotted it right out.• I've got to blot him out.• I use smack to blot things out.• Sandie closes her eyes and blots it out.• Would the daughter even remember her father with the perpetual presence of Hope to blot him out?• The washing of the northern blots was carried out according to standard methods.• She longed to blot it out, pretend the last few months had never happened. 