The Defense Advanced Research Projects Agency (DARPA) is an agency of the United States Department of Defense responsible for the development of new technologies for use by the military.
The DARPA Grand Challenge is a prize competition for American autonomous vehicles, funded by the Defense Advanced Research Projects Agency, the most prominent research organization of the United States Department of Defense. Congress has authorized DARPA to award cash prizes to further DARPA's mission to sponsor revolutionary, high-payoff research that bridges the gap between fundamental discoveries and military use.
by Dani_elle March 28, 2014
N. The emotion you feel when something is really really cool and really really horrible at the same time.

V. The act of making one feel the noun above.

Proper usage is in all capital letters, as the word refers to the Defense Advanced Research Projects Agency.

(for more information, see the cracked.com article '6 New Weapons That You Literally Cannot Hide From')
I couldn't be any more DARPA right now.

Reading that article totally DARPA'd me.
by dexi April 4, 2010
"DARPA hard" is shorthand for something considered extremely hard to achieve. The phrase comes from the US agency DARPA (Defense Advanced Research Projects Agency) who are often tasked with coming up with solutions to very difficult problems (e.g. coming up with stealth technology to prevent aircraft being shot down). The implication is that only resources of the scale available to DARPA's would be required to crack the problem.
Giving every soldier the ability to know the position of every other solidier on the battlefield - that's going to be DARPA hard.
by Aaron January 9, 2004