black out

v. i.	1.	to experience a temporary loss of consciousness, memory, or vision.
v. t.	1.	to cause to become black, such as a stage, a computer screen, or a city.
	2.	to impose a blackout on (news or a sports event).
	3.	to make (a written text) illegible by applying a black ink over it; to blot out.
	4.	to suppress (a memory).

Verb	1.	black out - obliterate or extinguish; "Some life-forms were obliterated by the radiation, others survived"
	2.	black out - darken completely; "The dining room blackened out" Synonyms: blacken out
	3.	black out - suppress by censorship as for political reasons; "parts of the newspaper article were blacked out"
	4.	black out - lose consciousness due to a sudden trauma, for example Synonyms: zonk out, pass out