Definition of "don" []

• Used as a courtesy title before the name of a man in a Spanish-speaking area. (noun)
• Chiefly British A head, tutor, or fellow at a college of Oxford or Cambridge. (noun)
• Chiefly British A college or university professor. (noun)
• The leader of an organized-crime family. (noun)
• Archaic An important personage. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Mr. Bush's low approval ratings at the end of his term don't help, said Leonard Pfeiffer IV, a Washington recruiter for nonprofits."
• "The title don't make since to me -- it don't match the cake -- something is wrong here."
• "Sometimes, the term don-spyi is used for the combination of an audio and a meaning/object category."