To flash is defined as to give off a sudden light or to show quickly.(verb)
The definition of a flash is something quick and intense, often a light or a brief time.(noun)
See flash in Webster's New World College Dictionary
Origin: ME flashen, to splash, sprinkle; of echoic orig.
See flash in American Heritage Dictionary 4
verb flashed, flash·ing, flash·es verb, intransitive
Origin: Middle English flashen, to splash
Origin: , variant of flasken
Origin: , of imitative origin.
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