Comments:VEWT 105, EDT 399, Щербак 1961, 120. Cf. also Chag. čiber 'mountain goat' (R). The reflex -b- in Turkm. and Uygh. may be an indication of original vowel length (?) Shcherbak's hypothesis of the word being borrowed < Iranian is dubious; Pers. čapiš, čapuš itself may well be borrowed < Turkic. In any case, the Persian form cannot be a regular IE match for Lat. caper. Cf. WH 1, 157, sub caper: "Np. čapiš...lautlich unmöglich"; indeed, Common Iranian -p- (< IE -p-) > Mod. Pers. and NW-Iran. -b-, in exceptional cases -v- (Расторгуева ЗИФ 114-115); a parallel for caper may perhaps be found in Sak. cau̯, Osset. cäv 'goat' (see Аб. 1, 307, Bailey 105). One should mention the problematic "Wanderformen" Rum. cap, Alb. tsap, Ital. dial. cappo, Crim.-Goth. stap, Slav. *cá́pъ 'he-goat'; cf. also Oyr. čāp 'one year-old roebuck' ( < Mong.?). See Трубачев 1960, 89-90, Orel 47 with literature; note especially Hubschmid's (1954, 49) hypothesis of the Turkic origin of this Wanderwort.