Comment: Obl. stem *ṭʷelä-, cf. Tab. ṭuli-, Ag. ṭuli-, Tsakh. ṭele. The meaning 'rib' occurs normally only in compounds (Rut. begid ṭul, Tsakh. muɣlena ṭele), but in Agul it also occurs separately. Somewhat dubious is the Ud. form (with metathesis and an obscure a- in Anlaut). The word belongs to the 3d class in Rut. and Tsakh., but to the 4th class in Kryz. and Bud.