Yes, flash is playable
...and is worth 11 points.
Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Flash" Definition
noun
A brief news dispatch or transmission.
A device, such as a flashbulb, flashgun, or flash lamp, used to produce such illumination.
A sudden perception: a flash of insight.
A sudden, brief, intense display of light.
idiom
Flash in the pan One that promises great success but fails.
adjective
Happening suddenly or very quickly: flash freezing.
Of or relating to figures of quarterly economic growth released by the government and subject to later revision.
Of or relating to photography using instantaneous illumination.
Of or relating to thieves, swindlers, and underworld figures.
Slang Ostentatious; showy: a flash car.
verb-intransitive
Slang To expose oneself in an indecent manner.
Slang To think of or remember something suddenly: flashed on that time we got caught in the storm.
To appear or occur suddenly: The image flashed onto the screen.
To burst forth into or as if into flame.
To give off light or be lighted in sudden or intermittent bursts.
verb-transitive
To cause (light) to appear suddenly or in intermittent bursts.
To cause to burst into flame.
To cause to reflect light from (a surface).
To communicate or display at great speed: flashed the news to the world capitals.
To cover with a thin protective layer.
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