(idiomatic, informal) To join a conversation or situation in which one is not welcome or invited; to interject (connotes a rude or discourteous interruption).

(figuratively) to reveal one's secrets to the public.

(idiomatic) To be heard but not attended to, when a person fails to pay attention.

Used other than figuratively or idiomatically: see up, in, the, air.

(idiomatic) Not yet resolved, finished, answered, decided or certain.

an entrance

(idiomatic) To misspeak, to say something embarrassing or wrong, or to make a mistake in public, or a social blunder, that is embarrassing or offensive.

(idiomatic) born rich, or into a wealthy family

(duration, idiomatic) For a hopelessly long time; used especially in respect to discussing, explaining, insisting, etc.

To enclose with a fence. / (idiomatic, by extension) To restrict freedom.