Noni Share definition Flag Pronounced nah-nee. Word used to define vagina. Not as dirty as "pussy" but more hip than saying "vagina." Some girls on the internet have nonis that make you go "EWWWW!" Noni by dreadreaDREA! (LOL FAIL) March 18, 2009 0 0 Get merch Get the Noni mug. Buy Now — $32.95 See more merch