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A portmanteau of fiend and grin. It's usually used when something sinister comes into mind.
Person1- "That guy is always up to something. Why is he ginning so evilly?"

Person2 - "It's a frin, a very sinister frin"
by Caudillo August 06, 2011
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2
A group of faggots on a forum that combined their powers for the love of the forum.
Wow what at that group of frins.
by Hahano1 September 12, 2011
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3
thinking of a significant other in a sexual way. when u want to have their weenie in your va-heen
bonnie can we be frins
by hdidenjssn March 23, 2017
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4
Frin is a misspelling of Find - commonly used when you fat finger the keyboard
See if you can frin Hannah....
Oh my bad - I mean FIND
by The One True Nugget June 22, 2017
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