fetters
  枷鎖
  Fet·ter n.  [Chiefly used in the plural, fetters.]
  1. A chain or shackle for the feet; a chain by which an animal is confined by the foot, either made fast or disabled from free and rapid motion; a bond; a shackle.
     [They] bound him with fetters of brass.   --Judg. xvi. 21.
  2. Anything that confines or restrains; a restraint.
     Passion's too fierce to be in fetters bound.   --Dryden.