A quarterback that isn't very good at throwing but can run like the wind. Typically of the african american persuasion.
Shiiiit, looka dat quarterblack go!
by John Fuchs March 20, 2008
An african-american football player in the quarterback position. Related positions include runningblack, lineblacker, cornerblack
Mike Vick is the best quarterblack in the United States.
by hithere:) February 03, 2011