S: (n) restraint, constraint (a device that retards something's motion) "the car did not have proper restraints fitted"
S: (n) device (an instrumentality invented for a particular purpose) "the device is small enough to wear on your wrist"; "a device intended to conserve water"
S: (v) manacle, cuff, handcuff (confine or restrain with or as if with manacles or handcuffs) "The police handcuffed the suspect at the scene of the crime"