What does the word flinch mean?

Usage examples for flinch

  1. And already at the heart of her she knew that when the moment came she would not flinch. – The Keeper of the Door by Ethel M. Dell
  2. His face was of an olive color which was unequally distributed over his features; he was inclined to be pudgy, and his clothes did not appear to fit him; but for all that he had the air of a man who with piercing eyes saw his way before him and did not flinch from taking it, rough as it might be. – The Vizier of the Two-Horned Alexander by Frank R. Stockton
  3. You'll not flinch, lad? – The Wicked Marquis by E. Phillips Oppenheim