/ ˈʃækl; NAmE / verb [ vn ]
1.
to put shackles on sb :
The hostage had been shackled to a radiator.
The prisoners were kept shackled during the trial.
2.
[ usually passive ] to prevent sb from behaving or speaking as they want
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WORD ORIGIN
Old English sc(e)acul fetter , of Germanic origin; related to Dutch schakel link, coupling.