1. a word that can be a substitute for the word COOL.
2. Can also be used in negative tense.
3. reference to the derogatory word for the vagina.
1. DUDE, that was SO fimmu!
2. Fimmu that, mang... We can think of something better to do.
3. My mom is such a FIMMU! She kicked me out of the house again!
by iLeanLove December 1, 2008
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