What does the word barrier mean?

Usage examples for barrier

  1. A pause of bitter reflection raised a barrier of stone between them. – Swirling Waters by Max Rittenberg
  2. " The coming of the Mohawks has put a barrier between us and them. – The Hunters of the Hills by Joseph Altsheler
  3. The barrier of the fire itself should not keep him back. – Carolyn of the Corners by Ruth Belmore Endicott