What does the word postage mean?

Usage examples for postage

  1. Send 2 cents postage for each pamphlet. – Oregon, Washington and Alaska; Sights and Scenes for the Tourist by E. L. Lomax
  2. Congress took control of the post- office on condition that no more revenue should be raised from postage than should suffice to discharge the expenses of the service. – The Critical Period of American History by John Fiske
  3. Postage here is also double what it is in Florence. – Cambridge Sketches by Frank Preston Stearns