What does the word eighteen mean?

Usage examples for eighteen

  1. And so at eighteen she was home for good. – Our Nervous Friends Illustrating the Mastery of Nervousness by Robert S. Carroll
  2. That will be enough for to- night's stage, which will be eighteen miles without water. – Atlantida by Pierre Benoit
  3. And eighteen whole years! – The Heart of Arethusa by Francis Barton Fox