What does the word nadir mean?

Usage examples for nadir

  1. So much is clear; but I fain would know How you can so reckless and fearless go, Head upward, head downward, all one to you, Zenith and nadir the same in your view? – Bird-Neighbors by Blanchan, Neltje
  2. The nadir is the lowest point in the heavens and the zenith is the highest. – Keats: Poems Published in 1820 by John Keats
  3. Nadir Sharif certainly knows it. – The Moghul by Thomas Hoover