To be discovered, be revealed.
To express one's opinion openly.
To make a debut in a new field.
To come out of the closet.
To walk onto the field at the beginning of an innings.
To end up or result.
To be deducted from.
To go on strike, especially out of solidarity with other workers.
To become visible in the sky as a result of clouds clearing away.
Used other than figuratively or idiomatically: see come, out.
To be published, be issued.
To inadvertently reveal any secret, particularly a secret that puts one at an advantage or disadvantage.
In card playing, to accidentally reveal one's cards or hand.