Ub. has also a word ɣa 'testiculus', but it is obviously an AK loanword. The genuine reflex of PWC *Ł́A is Ub. -źa in tʷá-źa 'he-goat' ( = Abkh. abǝʁ́), ṭǝ-źá 'ram' ( = Abkh. a-tǝ́ʁ́) and ba-źá 'penis'.

    This root may have something to do with the PN and PAA words for 'slave' (if we assume that a self-denomination for Eastern Daghestan dwellers *lak:(V) could be borrowed by the Nakh and through them, possibly, by Western Caucasians with the meaning 'slave'): PN *lag (Chech., Ing. laj, Bacb. lag), PAA *lǝgǝ (Abkh. a-lǝ́g, Abaz. lǝg). Since these words have a velar, they can not be connected with another EC name for 'slave', Av. laʁ etc. (see on its possible origin under *ʔV̄ƛ̣V).

    Of obvious Caucasian origin is Osset. läg 'man, male' (see Abayev 1973, 20).