Used to address a man whose name is unknown.
A Macintosh computer (made by Apple Inc.).
son of.
McMaster University
A diminutive for a person with a surname that starts with "Mac" or "Mc".
A diminutive of the male given name Max.
A respectful term of address to an adult male (often older), especially if his name or proper title is unknown.
A man of a higher rank or position.
to a teacher.
to a knight or other low member of the peerage.
to a superior military officer.
A respectful term of address to a man of higher rank or position
To address (someone) using "sir".