70's Slang term for speed
Jim did 12 rails of flash and passed the fuck out
by Loomis November 17, 2005
To lose control and attack someone
Man,ease up homie, I will flash on yo ass!
by Mark August 11, 2004
A DC Comics superhero with the ability to run at impossible speeds from sound to light. There have been lots guys to wear the costume in the past(Jay Garrick-Barry Allen)But the coolest one so far is Wally West who started off as the original Flash's sidekick. One thing about the Flash is that he makes a lot of F'ing enemies, so he famous for his Rogues Gallery.
The Flash: Fastest Man Alive!
by Tolin November 09, 2005
looking extremely good or well dressed, equivalent to bawlin or pimpin
"nothins safe not your tv, or dvd. no one can read me my rights, flee the scene lookin flash on your brand new bike" --Drapht
by Telephone45 August 23, 2007
Uncommon usage, technical jargon, verb, meaning 'to erase'.

Comes from 'eeproms' (Electrically Eraseable Programmable Read Only Memory) units in days of yore which were 'flashed' so they could be written on again. Typically, a computer geek would understand this usage.
PC Onwer: "So, should I through my broken computer in the trash?"

Technician: "Make sure you flash the drive first, for security reasons."

PC Onwer: "WTF?"

Tech: "Uhh...erase all the information."
by T.R.I. July 24, 2006
to suddenly go from a fine demeanor to an aggressive/hostile one
i was jus sittin here, mindin my bidniss, and you went on flash for no reason.
by skilldoo February 19, 2008
Dwyane Wade's nickname, courtesy of Shaq.
"Yo, you see Flash take it to the house against Houston last week?"
by Ben February 17, 2005

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