The definition of an adjective is a part of speech that is used to describe a noun. Red, tall, better and fast are all examples of adjectives.
In modern parlance, a gentleman (from gentle + man, translating the Old French gentilz hom) is any man of good, courteous conduct. A gentleman may also simply be a polite term for any man, as in indications of gender-separated facilities, or as a sign of the speaker's own courtesy when addressing others. The modern female equivalent is lady.
2. Definition of a gentleman. The term gentleman is a word that supports various applications in our language. Called the individual who rode a horse as a gentleman. In relation to the activity of horseback riding, another application that allows this word is for that individual who belongs to an order of chivalry.