What is the meaning of Gentleman?

Any well-bred, well-mannered, or charming man.

Any man.

A man of gentle but not noble birth, particularly a man of means (originally ownership of property) who does not work for a living but has no official status in a peerage; an armigerous man ranking below a knight.

An effeminate or oversophisticated man.

An amateur or dabbler in any field, particularly those of independent means.

An amateur player, particularly one whose wealth permits him to forego payment.

gentlemanlike

A respectful term for a person of either sex: gentleman, lady

gentleman

gentleman, especially an anglophone one

gentleman

British gentleman

a gentleman (refined, well-mannered man)

Source: wiktionary.org