What does the word bounden mean?

Usage examples for bounden

  1. But, gentlemen, there is another explanation, a terrible way of accounting for that second journey, so terrible and horrible that I wish it were not my bounden duty to put it before you. – The Queen Against Owen by Allen Upward
  2. So Nello resolved to play his part, the part that it was his bounden duty to play. – The Intriguers by William Le Queux
  3. It was your bounden duty. – Floyd Grandon's Honor by Amanda Minnie Douglas