References:МССНЯ 353. ND 547 suggests *daPV(ḲV) 'to stick, to glue' > Ural. + Mong. *dabirkaj 'resin of a coniferous tree' + TM *dapka- 'unite, attach' + Sem. *dbḳ- 'stick to, cling'; ND 2395 *ṭaṗV(-LV) 'to feel/touch with fingers, smear' (Balt. tep-, Ur., Drav. + Sem.); 2402 *ṭaṗ(V)ɣV 'dirt, mud' (Alt., Kartv. + SH). So there may be more than one root.