What does the word unroll mean?

Usage examples for unroll

  1. On the 17th of March, in a moment of gaiety and good humour, he desired me to unroll Chauchard's great map of Italy. – The Project Gutenberg Memoirs of Napoleon Bonaparte by Bourrienne, Constant, and Stewarton
  2. To Owens, sitting in his library in an American colliery town, the long story of civilization seemed to unroll before his eyes and, everywhere, possession of gold brought power and fame. – The Boy With the U.S. Miners by Francis Rolt-Wheeler