A performance, by an aspiring performer, to demonstrate suitability or talent.

"I've been to five auditions this week."

The sense of hearing.

"His audition was poor."

An act of hearing; being heard.

Something heard.

To evaluate one or more performers in through an audition.

"We auditioned several actors for the part."

To take part in such a performance.

"Several actors auditioned for the part."