a (context|now|_|rare|_|outside of set phrases) Pertaining to those arts and sciences the study of which is considered "worthy of a free man" (as opposed to (term|servile), (term|mechanical)); worthy, befitting a gentleman.
n Someone left-wing; one with a left-wing ideology.
n A supporter of any of several liberal parties.
n (US) One who favors individual voting rights, human and civil rights, individual gun rights(,) and laissez-faire markets (qualifier|also called "classical liberal"; compare libertarian).