Flash, n.; pl. Flashes
1. A sudden burst of light; a flood of light instantaneously appearing and disappearing; a momentary blaze; as, a flash of lightning.
2. A sudden and brilliant burst, as of wit or genius; a momentary brightness or show.
The flash and outbreak of a fiery mind. --Shak.
No striking sentiment, no flash of fancy. --Wirt.
3. The time during which a flash is visible; an instant; a very brief period; as, I'll be back in a flash.
The Persians and Macedonians had it for a flash. --Bacon.
4. A preparation of capsicum, burnt sugar, etc., for coloring and giving a fictitious strength to liquors.
Flash light, or Flashing light, a kind of light shown by lighthouses, produced by the revolution of reflectors, so as to show a flash of light every few seconds, alternating with periods of dimness. --Knight.
Flash in the pan, the flashing of the priming in the pan of a flintlock musket without discharging the piece; hence, sudden, spasmodic effort that accomplishes nothing.