1. A device, usually one of a pair connected to a chain, that encircles the ankle or wrist of a prisoner or captive.

2. A hobble for an animal.

3. Any of several devices, such as a clevis, used to fasten or couple.

4. often shackles A restraint or check on action or progress: "throwing off the puritanical shackles" (Ben Yagoda).

1. To put shackles on (someone); confine with shackles.

2. To fasten or connect with a shackle.

3. To restrict, confine, or hamper. See Synonyms at hobble.