Simple past tense and past participle of shackle.(verb)
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Use "shackled" in a sentence
"Rather than remain shackled to a waning star, the captain filed for bankruptcy and divorce in 1905."
"But there was never a chance, never a moment, when he might run free of a cage about him, of the walls of a room restricting him, of a chain shackled to the collar about his throat."
"For example, if demand for rice rises, Vietnamese farmers — who remain shackled by many longstanding regulations of communism — aren’t always able to respond quickly."