CIDARIS, in antiquity, the mitre used by the Jewish high-priests. The Rabbins say, that the bonnet used by priests in general was made of a piece of linen cloth 16 yards long, which covered their heads like a helmet or turbant: and they allow no other difference between the high-priest's bonnet and that of other priests, than that the one is flatter, and more in the form of a turbant; whereas that worn by ordinary priests rose something more in a point.