sir

noun

A man of a higher rank or position. / to a knight or other low member of the peerage. / to a superior military officer. / to a teacher.

The sir greeted the guests with a warm smile.

意味（1）

A man of a higher rank or position.

意味（2）

to a knight or other low member of the peerage.

Just be careful. He gets whingy now if you don't address him as Sir John.

意味（3）

to a superior military officer.

Sir, yes sir.

意味（4）

to a teacher.

Here's my report, sir.

意味（5）

Excuse me, sir, do you know the way to the art museum?