A scold's bridle, sometimes called a witch's bridle, a gossip's bridle, a brank's bridle, or simply branks, was an instrument of punishment, as a form of public humiliation. It was an iron muzzle in an iron framework that enclosed the head (although some bridles were masks that depicted suffering). A bridle-bit (or curb-plate), about 5 cm × 2.5 cm (2 in × 1 in) in size, was slid into the mouth and... Wikipedia