BLACKOUT

noun Date: 1913 1. a turning off of the stage lighting to separate scenes in a play or end a play or skit, a period of darkness enforced as a precaution against air raids, a period of darkness (as in a city) caused by a failure of electrical power, a transient dulling or loss of vision, consciousness, or memory , 3. a wiping out ; obliteration, a blotting out by censorship ; suppression , a usually temporary loss of a radio signal, the prohibition or restriction of the telecasting of a sports event, a time during which a special commercial offer (as of tickets) is not valid