n. Synonymous with "joint", a Billis is a marijuana smoke frequently used for relaxing. The definition of is known to possess originated from Bidford, and it is usage is only used within a tiny area around Bidford, making it outstanding secvretive word for a joint! The most beautiful title in the world.A extremely gorgeous girl.Unexplainable personality.Knows what too state,always.Does whatever,whenever.Billi. Billi is normally for a woman from europe, croatia, united kingdom, around there, she frequently loves to blaze, party, drink, play rs, and loves stone n roll. adj-term used to establish any behavior, look, person, activity, outfit, food, automobile basically ANYTHING that is strange, uncommon, entirely absurd, or simply down right incorrect.also is ways to let buddies understand you are hammered.