Show Someone The Door Meaning

(idiomatic, by extension, especially of a person) To dismiss or reject; to exclude someone who was formerly included.

Example: 1913, Jeffrey Farnol, The Amateur Gentleman, ch. 29:
  "[N]o man shall laugh at me now that I'm down. Show him the door, Dig."
1939, "Here's Your Hat!," Time, 3 April:
  The medical profession, by its drift toward specialization, is handing the family doctor his hat and showing him the door.
2008, Bruce DePuyt, "Sweeping the Red Out of Our Region," Washington Post, 9 Nov., p. B08 (retrieved 24 Aug. 2009):
  In Maryland, Rep. Connie Morella, a skillful, conscientious politician, was ousted. . . . The always-charming Morella . . . provided great constituent service. . . . Still, voters showed her the door.