from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A large impromptu public gathering of people, especially when organized through text messaging or online social networks.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A group of people who converge on a spot with little forewarning, perform some action (usually a
protestor a dance), and disperse quickly.
from Wiktionary, Creative Commons Attribution/Share-Alike License
The term "flash crowd" was coined by Larry Niven in Flash Crowd, a story about cheap teleportation in the future.
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