- sir
- sirW3 [sə strong sə: $ sər strong sə:r] n[Date: 1200-1300; Origin: SIRE1]1.) spoken used when speaking to a man in order to be polite or show respect▪ 'Report back to me in an hour, sergeant.' 'Yes, sir.'▪ Can I help you, sir?▪ Sir! You dropped your wallet.2.) Dear Sir/Sirsused at the beginning of a formal letter to a man or to people you do not know3.) Sir▪ Sir Paul McCartney▪ Sir Jasper4.) BrE spoken used by children at school when speaking to or talking about a male teacher▪ Sir, I've forgotten my homework.▪ Look out - sir's coming back!→↑miss2 (4)5.) no/yes sir! also no/yes siree! especially AmEold-fashioned spoken used to emphasize a statement or an answer to a question▪ I will not have that man in my home, no sir!
Dictionary of contemporary English. 2013.