1 a man who is polite and who behaves well towards other people 彬彬有礼的人；绅士: Everyone likes and respects Joe because he's a real gentleman. 人人都喜欢和尊敬乔，因为他很有君子风度。

2 (formal 正式) used when speaking to or about a man or men in a polite way （用于对男子的尊称）先生: Ladies and gentlemen (= at the beginning of a speech) 女士们，先生们（用于演说或致辞开头）Mrs Flinn, there is a gentleman here to see you. 弗林太太，有位先生找您。

3 (old-fashioned 旧) a rich man with a high social position 社会地位高的有钱人