Student Dictionary

One entry found for sir.
Main Entry: sir
Pronunciation: (primarystress)sschwar
Function: noun
Etymology: Middle English sir "a man of rank or position," from sire "a father," from early French sire "lord, superior," from Latin senior (adjective) "older, elder" --related to SENIOR
1 : a man having the right to be addressed as sir -- used as a title before the given name of a knight or baronet
2 : a title of respect used in addressing a man without using his name

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