Lewis & Short

pŏdēres or pŏdēris, is, m., = ποδήρης, a long garment descending to the ankle, worn by the priests, Tert. adv. Jud. 11; cf. Isid. Orig. 19, 21: in veste poderis quam habebat totus erat orbis, Vulg. Sap. 18, 24.