Origin: 1225–75; Middle English pyllory < Old French pilori, perhaps < Medieval Latin pīlōrium, equivalent to Latin pīl(a) pillar (see pile1) + -ōrium-ory2, though Romance variants such as Provençal espillori suggest a less transparent source
1274 (attested in Anglo-L. from c.1189), from O.Fr. pellori (1168), from M.L. pilloria, of uncertain origin, perhaps a dim of L. pila "pillar, stone barrier." The verb is first attested 1600.