Comments:KW 87. An expressive Turk.-Mong. isogloss, tending to merge (both in Turk. and Mong.) with the reflexes of *dĕ̀lp`à 'flat, broad' ("to shake, flatter (of flat objects)"). One cannot exclude that a merger indeed took place, and the original shape of the root had been *dalV ( ~ -e-) without the *-p`-: cf. WMong. dalaji- 'to brandish, swing' (see TMN 1, 328-329), dele- 'to wave, flap (wings)'; Karakh. jalŋu 'flip-flap, the swing' (EDT 930), see SKE 258.