shackle

1. A restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner) (synset 104188289)
   is a type of: constraint, restraint - a device that retards something's motion
   subtypes:

   • ball and chain - heavy iron ball attached to a prisoner by a chain
   • fetter, hobble - a shackle for the ankles or feet
   • cuff, handcuff, handlock, manacle - shackle that consists of a metal loop that can be locked around the wrist; usually used in pairs
   • chains, irons - metal shackles; for hands or legs
   same as: bond, hamper, trammel
2. A U-shaped bar;
   The open end can be passed through chain links and closed with a bar (synset 104188622)
   is a type of: bar - a rigid piece of metal or wood; usually used as a fastening or obstruction or weapon
   is a part of: padlock - a detachable lock; has a hinged shackle that can be passed through the staple of a hasp or the links in a chain and then snapped shut

1. Bind the arms of (synset 201303151)
   is a type of: confine, constrain, hold, restrain - to close within bounds, or otherwise limit or deprive of free movement
   same as: pinion
2. Restrain with fetters (synset 201290655)
   is a type of: confine, constrain, hold, restrain - to close within bounds, or otherwise limit or deprive of free movement
   subtypes: cuff, handcuff, manacle - confine or restrain with or as if with manacles or handcuffs
   same as: fetter

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