Comment: Cf. also Lezg. erg. murḳadi, Khl. mɨrk,mɨrk:adi, Tab. Kand. merk:, Düb. mirk:i. 4th class in Rut., Tsakh., but 3d class in Kryz., Bud. and Archi. Obl. base *merƛ̣:ʷɨ-, cf. Tsakh. mɨk:ɨ- (most other languages reflect only consonantal obl. bases). The Archi word is a historical subessive case ("under the ice").
See Trubetzkoy 1930, 83; Лексика 1971, 189; Гигинейшвили 1977, 70.