S: (n) shackle, bond, hamper, trammel (a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner))
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) impede, hinder (be a hindrance or obstacle to) "She is impeding the progress of our project"
S: (v) prevent, keep (stop (someone or something) from doing something or being in a certain state) "We must prevent the cancer from spreading"; "His snoring kept me from falling asleep"; "Keep the child from eating the marbles"
S: (v) hopple, hobble (strap the foreleg and hind leg together on each side (of a horse) in order to keep the legs on the same side moving in unison) "hobble race horses"