What does the word connection mean?

Usage examples for connection

  1. Did you mean to suggest any connection?" – The Mystery of 31 New Inn by R. Austin Freeman
  2. In five minutes he had the city connection and his man. – Red Pepper Burns by Grace S. Richmond
  3. Maybe there's a connection between this and what happened a while ago, eh? – Dave Dawson at Casablanca by Robert Sydney Bowen