What does the word yardarm mean?

Usage examples for yardarm

  1. The captain then called to him to go out to the end of the " yardarm." – The Life of a Ship by R.M. Ballantyne
  2. May I be ignominiously hanged at a yardarm if that's true. – 'Twixt Land & Sea by Joseph Conrad
  3. She would sniff around for a female presence, and then she would look at Paul; Paul would suggest that the sun was over the yardarm; and they would go to DiMillo's for dinner. – O+F by John Moncure Wetterau