verb:

1. To cover with a thin layer, as objects of glass with glass of a different colour.
2. To release the pressure from a pressurized vessel.
3. To break forth like a sudden flood of light; to show a momentary brilliance.
4. To strike and throw up large bodies of water from the surface; to splash.
5. To communicate quickly.
6. To burst out into violence.
7. To perform a flash.
8. To briefly, and often unintentionally, expose one's naked body or underwear, or part of it, in public. (Contrast streak.).
9. To trick up in a showy manner.
10. To climb (a route) successfully on the first attempt.
11. To telephone a person, only allowing the phone to ring once, in order to request a call back.
12. To blink; to shine or illuminate intermittently.
13. To show or expose an "inappropriate" part of the body to someone for humorous reasons or as an act of contempt.
14. To move, or cause to move, suddenly.
15. To be visible briefly.
16. To evaporate suddenly. (See flash evaporation.).
17. To send by some startling or sudden means.
18. To make visible briefly.
19. To expand (blown glass) into a disc.
20. To flaunt; to display in a showy manner.
21. To write to the memory of (an updatable component such as a BIOS chip or games cartridge).
22. To cause to shine briefly or intermittently.

noun:

1. A form of military insignia.
2. A flashlight; an electric torch.
3. A sudden and brilliant burst, as of genius or wit.
4. Clipping of flash memory.
5. The sudden sensation of being "high" after taking a recreational drug.
6. A newsflash.
7. A pattern where each prop is thrown and caught only once.
8. Any of various lycaenid butterflies of the genera Artipe, Deudorix and Rapala.
9. A tattoo flash.
10. A preparation of capsicum, burnt sugar, etc., for colouring liquor to make it look stronger.
11. A very short amount of time.
12. The strips of bright cloth or buttons worn around the collars of market traders.
13. A language, created by a minority to maintain cultural identity, that cannot be understood by the ruling class.
14. A reservoir and sluiceway beside a navigable stream, just above a shoal, so that the stream may pour in water as boats pass, and thus bear them over the shoal.
15. Material left around the edge of a moulded part at the parting line of the mould.
16. A sudden, short, temporary burst of light.
17. Clipping of camera flash (“a device used to produce a flash of artificial light to help illuminate a scene").
18. A pool.

adjective:

1. Expensive-looking and demanding attention; stylish; showy.
2. Having plenty of ready money.
3. Liable to show off expensive possessions or money.
4. Relating to thieves and vagabonds.
5. Occurring very rapidly, almost instantaneously.

name:

1. Any of various DC Comics superheroes who have the power of superspeed, derived from an energy called the Speed Force.
2. A multimedia platform, most often used for adding animation and interactivity to webpages.