blackout

(noun) a suspension of radio or tv broadcasting.

(noun) darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft). Synonyms: brownout, dimout.

(noun) the failure of electric power for a general region.

(noun) a momentary loss of consciousness.

(noun) partial or total loss of memory. Synonyms: amnesia, memory loss. Example: "He has a total blackout for events of the evening."