Cucking stool

[Sarah]

A kind of chair formerly used for punishing scolds, and alsodishonest tradesmen, by fastening them in it, usually in front oftheir doors, to be pelted and hooted at by the mob, but sometimes tobe taken to the water and ducked; -- called also a castigatory, atumbrel, and a trebuchet; and often, but not so correctly, a duckingstool. Sir. W. Scott.