What does the word fortify mean?

Usage examples for fortify

  1. After speaking to the captains of companies on the subject, and failing to persuade either the generals or the soldiers, he remained inactive with the rest from stress of weather; until the soldiers themselves wanting occupation were seized with a sudden impulse to go round and fortify the place. – The History of the Peloponnesian War by Thucydides
  2. This storm, if it broke over the valley, promised to be almost a flood, and would not only replenish the water supply, but would fortify the range for quite a while against the merciless sun. – Hopalong Cassidy by Clarence E. Mulford
  3. Now she melted, indeed, and suffered Charmian to moan over her, and fortify her with all the reasons she had urged herself in various forms of repetition. – The Coast of Bohemia by William Dean Howells