1 definition by Joey_Bag_Of_Donuts

A.D.

Alpha Dog. The shortened name of rapper Alpha Dog from the rap group the G.D.I.'s. OR the leader/protector of the pack, usually the biggest and meanest memeber of a group of people, quite often an asshole.

A.D.'s gonna beat the hell out of you when he finds out you sucker punched his boy last night

by Joey_Bag_Of_Donuts August 13, 2010