Real Dictionary

audition
countable noun: An audition is a short performance given by an actor, dancer, or musician so that a director or conductor can decide if they are good enough to be in a play, film, or orchestra.
verb: If you audition or if someone auditions you, you do an audition.

audition in American English
the act or sense of hearing
to give an audition to
to perform in an audition
to try or compete in an audition
noun: a trial hearing given to a singer, actor, or other performer to test suitability for employment, professional training or competition, etc

audition in British English
noun: a test at which a performer or musician is asked to demonstrate his or her ability for a particular role, etc
verb: to judge by means of or be tested in an audition