What does the word sovereign mean?

Usage examples for sovereign

  1. " Our August Sovereign" was approaching. – The Missourian by Eugene P. (Eugene Percy) Lyle
  2. No, but I know that my sovereign needs me. – Master Olof A Drama in Five Acts by August Strindberg
  3. He laughed and slipped a sovereign into my hand. – The Man Who Drove the Car by Max Pemberton