What does the word post mean?

Usage examples for post

  1. " They had a post- office before," said Cleary. – Captain Jinks, Hero by Ernest Crosby
  2. Do you know Burton- of the Times- Post? – The Window at the White Cat by Mary Roberts Rinehart
  3. What would we need to get at the post, George? – The Lure of the Labrador Wild by Dillon Wallace