shackle (
http://definr.com/shackle)
n 1: a restraint that confines or restricts freedom (especially
something used to tie down or restrain a prisoner) [syn:
bond,
hamper,
trammel,
trammels]
2: a U-shaped bar; the open end can be passed through chain
links and closed with a bar
v 1: bind the arms of [syn:
pinion]
2: restrain with fetters [syn:
fetter]