sir

The definition of a sir is a man of high ranking, or a title of respect, or a reference to a man.

(noun)

An example of a sir is Sir Edmund Hillary.
An example of sir is how a sales person would ask a male customer if he found everything he needed.
An example of sir is a respectful way to start a letter to a man; Dear Sir.

See sir in Webster's New World College Dictionary

noun

a man of rank; lord
a respectful term of address used to a man: not followed by the given name or surname and often used in the salutation of a letter: Dear Sir
the title used before the given name or full name of a knight or baronet: Sir Walter Ralegh
Archaic a term of address used with the title of a man's office, rank, or profession: sir priest, sir judge, sir knight

Origin: ME < sire: see sire

Bible Sirach

See sir in American Heritage Dictionary 4

noun

Sir Used as an honorific before the given name or the full name of baronets and knights.
Used as a form of polite address for a man: Don't forget your hat, sir.
Used as a salutation in a letter: Dear Sir or Madam.

Origin:

Origin: Middle English

Origin: , variant of sire, sire; see Sire

abbreviation
Bible

Wisdom of Jesus, the Son of Sirach

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