Comment: Obl. stem *p:alḳʷa- (cf. Lezg. Khl. p:arḳʷa-, Tsakh. Gelm. barḳʷa-). Medial *-l- is reconstructed because of the liquid's preservation before a velar (original *-r- would be lost). 3d class in Tsakh., 4th class in Kryz. The root must have denoted some specific bone; to judge from external evidence, originally it must have been some bone of leg.