What does the word staunch mean?

Usage examples for staunch

  1. Juliet was as staunch as steel, and he was certain that Mr. Octagon would be on his side. – The Secret Passage by Fergus Hume
  2. He was plain, but staunch, was glad to know his neighbor, and hoped he would call often. – The Nightrider's Feud by Walter C. McConnell