What does the word upright mean?

Usage examples for upright

  1. Sitting upright upon the floor, with her long loose hair falling around her white face, Eugenia answered bitterly, Stephen Grey has no more love for me than I have for him. – Dora Deane by Mary J. Holmes
  2. The ground as he advanced was even, and for the first few steps he could walk upright, so that it did not seem inconvenient. – Eastern Tales by Many Story Tellers by Various
  3. Then stood Beowulf upright and firmly grasped Grendel. – Northland Heroes by Florence Holbrook