Definition of brownout in English:

brownout

Syllabification: brown·out
Pronunciation: /ˈbrounˌout
 
/

noun

chiefly North American
  • A reduction in or restriction on the availability of electrical power in a particular area: the cities are experiencing brownouts as air conditioners are switched into overdrive
    More example sentences
    • With Edison's new system, brown-outs and black-outs were frequent, along with breakage and, at times, sparking and fires from short circuits and poor wiring.
    • As the California power crisis of this summer demonstrates, deregulation brings with it the added risk of brown-outs and even black-outs that no facility can afford.
    • Likewise, everyone has access to heat or lights with a simple flick of a switch; we don't suffer brown-outs or rolling blackouts, like some areas of the Third World.

Origin

1940s: after blackout.

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
noun
elaborate ornamentation of a vocal melody