Definition

noun

A means of exit, escape, reprieve, etc.
“They wrote the law to give those organizations an out.”
A state in which a member of the batting team is removed from play due to the application of various rules of the game such as striking out, hitting a fly ball which is caught by the fielding team before bouncing, etc.
A dismissal; a state in which a member of the batting team finishes his turn at bat, due to the application of various rules of the game, such as the bowler knocking over the batsman's wicket with the ball.

verb

To eject; to expel.
To reveal (a person) as LGBT+ (gay, trans, etc).
To reveal (a person or organization) as having a certain secret, such as a being a secret agent or undercover detective.