Kasajev A. M., editor(1993),“тырыса”, inIron-wyryssag ʒyrdwat[Iron–Russian Dictionary], 4th edition, Vladikavkaz: North-Ossetian Institute of Humanitarian Studies
Etymology
From Middle Persian [script needed](drafš, “flag, banner”) [script needed]. Compare modern Persian درفش(dirafš, “banner, flag”), Old Armenian դրօշ(drōš).