Definition of "Don" :

noun: a Spanish courtesy title or form of address for men that is prefixed to the forename

"Don Roberto."

noun: a European river in southwestern Russia; flows into the Sea of Azov

noun: Celtic goddess; mother of Gwydion and Arianrhod; corresponds to Irish Danu

noun: a Spanish gentleman or nobleman

noun: the head of an organized crime family

noun: teacher at a university or college (especially at Cambridge or Oxford)

verb: put clothing on one's body

"The princess donned a long blue dress."