Istiaque Share definition Flag A really awesome, spontaneous Muslim Bengali dude, who knows how to have a good time. Likes innocent girls and spirited schools. This guy I've been dating is a total Istiaque, I think it's meant to be. Istiaque by Certified O.G. November 28, 2010 0 0 Get merch Get the Istiaque mug. Buy Now — $32.95 See more merch