All 6 Uses

shackle
in
A Lesson Before Dying
(Auto-generated)

If he wants to come in the dayroom in shackles—all right.†
Chpt 17
If he wants to stay in his cell unshackled—all right.†
Chpt 17

unshackled = removed restraints

standard prefix: The prefix "un-" in unshackled means not and reverses the meaning of shackled. This is the same pattern you see in words like unhappy, unknown, and unlucky.
He can meet her in the dayroom if he wants, but he will be shackled.†
Chpt 17 *

shackled = restrained
The sheriff explained that he would be shackled hand and feet there.†
Chpt 18
He kept his head bowed, his shackled hands under the table, and he did not answer her.†
Chpt 18
Then they came in, Jefferson in front, shackled, walking with short steps, his head bowed and his shoulders stooped.†
Chpt 18

Definitions:

(1) (shackle)
to restrain freedom; or a device used to restrain freedom such as metal rings used to chain wrists or ankles to each other
(2) (meaning too rare to warrant focus)