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1.
the act of performing oral sex on a woman. a slang word derived from the more proper word 'cunnilingus'.

on a male, this act would be considered fellacio.
person a: Did he give you any cuni?

female: Oh, yeah!! It was so good, I thought I was going to break my fuckin' toes!!
by galway_guy February 11, 2009
 
2.
Random ass second cousin that you've never met yet he/she randomly "pokes" you on facebook from time to time.
"Who the hell just poked you?"
"Damn, it's my stupid cunis again. He claims to be my parent's cousin."
by definetheuniverse December 31, 2011