Comments: PTsKh *ʔẽχIu (cf. also Tsez. in Imnaishvili's notation iχIu); PGB *ʔẽχu (cf. also Bezht. Tlad. ẽχö, Khosh. eχo; Bezht. prop. ẽχe reflects the original obl. base, cf. Gunz. ẽχe-, Bezht. Tlad. ẽχe-). Lomtadze lists also a Gin. form iqIu 'river', which is possibly a misspelling instead iχu or iχIu.