What does the word improve mean?

Usage examples for improve

  1. He said that in a week or two all the soup- houses would close for the season, and, as Savage had received letters that he thought he would improve by, he would release me from the task of running the soup- house. – A Woman's Life-Work Labors and Experiences by Laura S. Haviland
  2. And no intelligent creature, to the Nipe's way of thinking, would waste time worrying about a situation he could not improve upon. – Anything You Can Do ... by Gordon Randall Garrett