What does the word field mean?

Usage examples for field

  1. Full of these thoughts, I went on quickly into the town, half running across the field, and never looking back. – A Night on the Borders of the Black Forest by Amelia B. Edwards
  2. The Colonel and the Major had run hastily out into the field. – Ailsa Paige by Robert W. Chambers
  3. The field is the world. – The Life Radiant by Lilian Whiting