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.
a person who receives or lives on a pension. 2. a hireling. 3. a student at Cambridge University who pays for his or her commons and other expenses, and is not supported by any foundation. 4. Obsolete. a gentleman-at-arms. Origin of pensioner.