gentleman

1a :  a man of noble or gentle (see ¹gentle 1a) birthb :  a man belonging to the landed gentryc (1) :  a man who combines gentle (see ¹gentle 1a) birth or rank with chivalrous qualities (2) :  a man whose conduct conforms to a high standard of propriety or correct behaviord (1) :  a man of independent means who does not engage in any occupation or profession for gain (2) :  a man who does not engage in a menial occupation or in manual labor for gain

2 :  valet 1b —often used in the phrase gentleman's gentleman

3 :  a man of any social class or condition —often used in a courteous reference show this gentleman to a seat or usually in the plural in address ladies and gentlemen