quincy Share definition Flag when two girls want to do nothing but hang out with each other for no reason but to call each other by stupid names. flirting with one another. emma: omg you are such a quincy karli: haha no you are the quincy quincy by LEIGHMATKO April 13, 2009 0 0 Get merch Get the quincy mug. Buy Now — $32.95 See more merch