What does the word wherewith mean?

Usage examples for wherewith

  1. She understood everything as it was, and she sympathised with everything wherewith his heart was full to overflowing. – A Nobleman's Nest by Ivan Turgenieff
  2. They were suitable to any one in the middle class; but with the cap it was not the same thing, since he had nothing wherewith to replace it, and if he rejected that he must go bareheaded. – In the Day of Adversity by John Bloundelle-Burton
  3. It seems as if it were the point of death; only, the agony carries with it so great a joy, that I know of nothing wherewith to compare it. – The Life of St. Teresa of Jesus by Teresa of Avila