Wikipedia
Pranger
The pranger is a Central European physical punishment device related to the stocks and the pillory. The Middle Low German word means "something that pinches badly".
The pranger chained the victim's neck to a pair of leg restraints fastened around the ankles. Often the chain was short so that the offender was placed in an uncomfortable half-kneeling position.
In another type of pranger ( pillory), the condemned person was tied to a column that stood in the town center for public view. The pranger was only used for public humiliation as punishment, not for painful interrogation or coercion.