What does the word flight mean?

Usage examples for flight

  1. " There is a second flight of stairs. – From the Car Behind by Eleanor M. Ingram
  2. But he followed me and struck me, and then I jumped at him, and we both fell down the whole flight. – The Black Bag by Louis Joseph Vance
  3. If he found a book which interested him, he would read it with absorbed attention, quite unconscious of the flight of time. – Father Payne by Arthur Christopher Benson