urban dickhead-tionary Posted in U Best definition urban dickhead-tionary A person who always brings up words he found on Urban Dictionary like s/he spent all night memorizing the whole dictionary That one kid sitting by himself is alone because he is an urban dickhead-tionary. How satisfied are you with the definition? Looking for urban dickhead-tionary meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 100 times.