- Mr.
-
noun
(plural Messrs.)
Etymology: Mr. from Middle English, abbreviation of maister master; Messrs. abbreviation of Messieurs, from French, plural of Monsieur
Date: 15th century
1. — used as a conventional title of courtesy except when usage requires the substitution of a title of rank or an honorific or professional title before a man's surname <spoke to Mr. Doe> 2. — used in direct address as a conventional title of respect before a man's title of office <may I ask one more question, Mr. President> 3. — used before the name of a place (as a country or city) or of a profession or activity (as a sport) or before some epithet (as clever) to form a title applied to a male viewed or recognized as representative of the thing indicated <Mr. Baseball>
New Collegiate Dictionary. 2001.