Comments:The Mong. form may also be borrowed < Turk., see Щербак 1997, 166. Cf., on the other hand, Mong. omuɣ 'kin, clan' (which, however, may be a modification of the other attested form, Mong. obuɣ = Turk. *ōpa, under the influence of the present root; Mong. > Yak., Dolg. omuk, see Stachowski 193 ).
Comments:A Western isogloss. The stem may be derived from Common Altaic *úmu 'to bear, give birth' q. v., see АПиПЯЯ 58, 281, Дыбо 10, Лексика 149. The Turkic form, however, must have also been influenced by PA *nā̀mo 'testicle' (and/or *ǯi̯ŏmu `round'), which explains initial *j-.