What does the word mast mean?

Usage examples for mast

  1. Over and over again the captain looked up at the mast- head, and exclaimed, " Hold on, good sticks, hold on, and serve us a good turn!" – Old Jack by W.H.G. Kingston
  2. A high mast was firmly supported by wire rigging, and carried a large sail; it was also furnished with a rudder. – Round the World in Eighty Days by Jules Verne
  3. Many a captain began before the mast. – Ralph Granger's Fortunes by William Perry Brown