What does the word overnight mean?

Usage examples for overnight

  1. Evidently, however, it was only another story of a lucky break and an overnight fortune- a common occurrence these days. – Flowing Gold by Rex Beach
  2. She felt lonely without him, for he had never before been away from home to stay overnight. – Herbert Carter's Legacy by Horatio Alger
  3. I hear their feet overtaking me, brisk and resolute, as though a revelation had come to them overnight, and so now they know what to do, undiverted by any doubt. – Waiting for Daylight by Henry Major Tomlinson