Comments:EDT 46, VEWT 366, ЭСТЯ 1, 484-487, TMN 2, 66-67, Лексика 496. Turk. > Mong. otaq (see TMN 2, 67, Щербак 1997, 130). Some forms (like Tur. oda) suggest *ōtag - a secondary form, probably originally meaning "hearth" and derived from *ōt 'fire' and easily confused with *otag 'tent, dwelling place'. The latter, however, is very well attested (often in the shape *otagu) and certainly containing a short vowel.