Clauson (1972)
An etimological dictionary of pre-thirteenth-century Turkish
p. 169
üŋ-
‘to dig a hole in (something Acc.); to hollow (it) out’; cf. 2 üş-; differs from 1 öt-, 1 i:r- in that the latter imply passage through an object, while üŋ- implies only partial penetration. Survives only(?) in NC Kir. üŋü-; Kzx. üŋğ-. Xak. xi ol yığa:ç üŋdi: naqaba’l-xaşab ‘he hollowed out the piece of wood (etc.)’; also used when one digs a hole for the foundation of a wall (etc.) (iḏa naqaba ussa’l-ḥā’iṭ) Kaş. I 174 (üŋe:r, üŋme:k): Kom. xiv ‘to dig, excavate’ üŋ- CCG; Gr.: Kip. xiv üŋ- (with -ŋ-) cawwafa bi’l-naqr ‘to hollow out, excavate’ İd. 25.