SHACKLE n. 10 definitions
ion; specifically, a ring or band inclosing the ankle or wrist, and fastened to a similar shackle on the other leg or arm, or to something else, by a chain or a strap; a gyve; a fetter. His shackles empty left; himself escaped clean. Spenser.
CHAIN n.
links of a chain. When perfect, the calicles show twelve septa. -- Chain coupling. (a) A shackle for uniting lengths of chain, or connecting a chain with an object. (b) (Railroad) Supplementary coupling together of cars with a chain. -- Chain gang, a gang of convicts chained together. -- Chain hook (Naut.), a hook,…
COUPLER n.
One who couples; that which couples, as a link, ring, or shackle, to connect cars. Coupler of an organ, a contrivance by which any two or more of the ranks of keys, or keys and pedals, are connected so as to act together when the organ is played.