don
- n a Spanish gentleman or nobleman
- n teacher at a university or college (especially at Cambridge or Oxford)
- n the head of an organized crime family
- n Celtic goddess; mother of Gwydion and Arianrhod; corresponds to Irish Danu
- n a European river in southwestern Russia; flows into the Sea of Azov
- n a Spanish courtesy title or form of address for men that is prefixed to the forename
- v put clothing on one's body
The princess donned a long blue dress
don't-know
- n a person who responds `I don't know' in a public opinion poll
70% in favor, 13% opposed and 17% don't-knows
don budge
- n United States tennis player who in 1938 was the first to win the Australian and French and English and United States singles championship in the same year (1915-2000)
don juan
- n a legendary Spanish nobleman and philanderer who became the hero of many poems and plays and operas
- n any successful womanizer (after the legendary profligate Spanish nobleman)