Use Don in a sentence nounDon is defined as a Spanish title used to refer to a gentleman, or is a term used to describe a leader in an organized-crime family.An example of Don is the title used to refer to a Spanish gentleman.The head of a large branch of the Mafia family is an example of the don.verbTo don is defined as to put on a piece of clothing.When you put a hat on, this is an example of wh