What does the word upper mean?

Usage examples for upper

  1. And everything of that sort- you know how I get thinking when ideas like that get the upper hand with me. – Pelle the Conqueror, Vol. 2 by Martin Anderson Nexo
  2. Was it an upper or an under garment? – The Princess of the School by Angela Brazil
  3. When it's all been accomplished, you'll be an Upper. – Frigid Fracas by Dallas McCord Reynolds