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1. A restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)
   - bond, hamper, trammel
    
2. A U-shaped bar; the open end can be passed through chain links and closed with a bar

1. Bind the arms of
   - pinion
    
2. Restrain with fetters
   - fetter, enfetter

Derived forms: shackled, shackles, shackling

Type of: bar, confine, constrain, constraint, hold, restrain, restraint

Part of: padlock

Encyclopedia: Shackle, Thomas