(intransitive, of two opponents) To confront each other decisively. / (intransitive) To attempt to face or resolve an internal contradiction or difficulty.

(idiomatic, of two or more parties, often with a prepositional phrase) to reach an agreement or settle a dispute.

(originally) To fall headlong from a horse. / (Britain, idiomatic) To suffer some accident or misfortune; to fail.

(idiomatic) To confess; admit the truth. / 1921, B. M. Bower, chapter 6, in Sawtooth Ranch: / 1977 Oct. 23, John Gardner, "The World Of Tolkien," New York Times (retrieved 12 Sept 2013):

(idiomatic) emerging; aspiring; beginning to attract attention or critical acclaim

Used other than figuratively or idiomatically: see come, across. / (figuratively) To change sides; to cross over to work for the opposition.

(idiomatic, informal, by ellipsis) A polite formula used when one has not heard or understood what has been said, or to indicate surprise.

(idiomatic) To rapidly reach a turning point or climax. / (idiomatic) To suddenly reveal that which has lain latent for a time.

To come into a room or other space through a door or passageway. / (idiomatic) To survive, to endure. / To be communicated or expressed successfully. / (intransitive, idiomatic) To succeed.

(idiomatic, informal) Why; why is it; for what reason or purpose; due to what cause?