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A white-haired chick with an extremely passionate and loving fanbase on an online MOBA known as league of legends. Riven players, more specifically Riven Mains are often associated with raging and negative behavior.
"Man, fuck this dumb ass pussy ass bitch ass Riven main report gg afk."
by Lifesgambit January 04, 2017
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origin king's english:

to be divided; torn.
A river is riven when it divides into two or more directions.
by d.e.b. July 12, 2004
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