The Don is the best of something, e.g. the don is the head of an organisation. but in this case the don is the best looking girl or the best sandwich or the best ipod. Basically the best of any everday thing

Another form of “On God” but with more emphasis

Aberdeen FC

The leader of a gang, particularly in Mafia terms.

In light of the previous definitions stating that the "Don" is the "boss" or in charge of an organized crime family, this hip-hop / rap slang term was derived from the first name of "Don Vito Corleone" the main character and "boss" of the Corleone crime family in the classic blockbuster "Mario Puzo's The Godfather" (1972).

The head of a mafia crime family, usually Italian, ex. Don Corleone from "The Godfather".

The Don of a mafia is the boss of the family and also of the family business. He can declare war on another mafia family and he can also call and make a truce or surrender regarding such family wars. He can also arrange marriages of duaghters from the family even if the daughter is not his own. If you are late to a family meeting with the Don you better be wearing a bullet-proof vest.

The original pimp, Don Giovanni, the main character of an italian opera about seducing woman and the reperations there of.