badillac means: Adj 1;Bad Ass Cadillac 2; An older Cadillac model that has been tricked with hydrolics and candy paint. 3. Name of an Ol’ Skool Caddy who was too old to be eligible for government cash-for-cluckers program. However, the fire beltchin’ gas sucking rust bucket will still get you about. Inj1 is a black version of jerk. 2; Black male bastard. (in Community Dictionary, added by Heath Webster)