Come In Meaning

(of a fugitive or a person in hiding) To surrender; to turn oneself in.

Example: Used other than as an idiom: see come,‎ in.
To enter.
  Please come in and look around.
To arrive.
  That flight just came in.
To become relevant, applicable, or useful.
  The third stage of the plan is where Team B comes in.
1889, Thomas Huxley, in Popular Science Monthly; part of the "Agnosticism controversy", Agnosticism: A Rejoinder
  As I have shown, "infidel" merely means somebody who does not believe what you believe yourself, and therefore Dr. Wace has a perfect right to call, say, my old Egyptian donkey-driver, Nooleh, and myself, infidels, just as Nooleh and I have a right to call him an infidel. The ludicrous aspect of the thing comes in only when either of us demands that the two others should so label themselves.
To become available.
  Blueberries will be coming in next month.
  Most of the neighbors get 14 channels, but only two of them come in well here.
  They started together, but the drummer came in late.
  This is Charlie 456 to base. Come in, base. Do you read me?
To function in the indicated manner.
  Four-wheel drive sure came in handy while the bridge was washed out.
2006, G. D. McCrary, Guerrillas in the Midst, page 352:
  Every police officer and agent in New York City is gunning for you. If you come in now, I can guarantee your safety.
To finish a race or similar competition in a particular position, such as first place, second place, or the like.
  The horse I had bet on came in fourth in the second race.
To finish a race or similar competition in first place.
  My horse came in in the first race.