てじょう手錠tejou
1.

A device consisting of two metal or leather loops connected by a chain or bar, designed to restrain the wrists of an individual, typically used by law enforcement to limit the movements of a suspect during an arrest.

2.

A form of punishment used in the Edo period, where an individual would have their wrists bound together for a specified duration, restricting their freedom as a consequence of their actions.

3.

A pair of rings that encircle the wrists, intended to prevent the use of the hands, often associated with detaining individuals in legal or correctional contexts.

Example:

抗議することもできないうちに、僕は手錠をかけられ、留置場に送られていた。