try out
try out {v. phr.}
1. To test by trial or by experimenting.
He tried golf out to see if he would like it.
The scientists tried out thousands of chemicals before they found the right one.
The coach wants to try the new play out in the first game.
2. To try for a place on a team or in a group.
Tom tried out for the basketball team.
Shirley will try out for the lead in the play.
Compare: OUT FOR.
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Source: A Dictionary of American Idioms