دور daur A (Heb. ) s. m. 1. Revolution (of time or of any body), passing round (of wine), circular motion. 2. A species of argument, reasoning in a circle. 3. Age, period, cycle, tour, turn, time, vicissitude, circuit. دوردور daur daur, s. m. Prosperity. دورگردي daur- gard-ī, s. f. Revolution, changing.