360 dunk Share definition Flag It is when jump in the air and do a full rotation 360 then dunk the ball down hard. It is a dunk that can only be performed by the most athletic dunkers in basketball. Vince Carter is famously known for his high-flying 360 dunk in the 2000 NBA Slam Dunk Contest 360 dunk by weedrasta July 27, 2014 0 0 Get merch Get the 360 dunk mug. Buy Now — $32.95 See more merch