Perhaps related to Arintéŋul(“milk”, literally “nipple-water”), Pumpokolden(“milk”), from Proto-Yeniseian*den(“female nipple”).[1][2][3] Vovin and Dybo propose a derivation from a Xiongnu term, which they reconstruct as *ḍ(r)ung[4] or *ṭoŋh,[5] respectively.
^ Vajda, Edward; Werner, Heinrich (2022), “*den”, in Comparative-Historical Yeniseian Dictionary (Languages of the World/Dictionaries; 79, 80), volume 1, Muenchen: LINCOM GmbH, →ISBN, page 199
^ Pulleybank, Edwin George (1962), The Consonantal System of Old Chinese (Asia Major; 9), pages 239-265
^ Bonmann, Svenja; Fries, Simon (2025), “Linguistic Evidence Suggests That Xiōng-nú and Huns Spoke the Same Paleo-Siberian Language”, in Transactions of the Philological Society[1], volume 0, →DOI, pages 1-24
^ Vovin, Alexander (2000), “Did the Xiong-nu Speak a Yeniseian Language?”, in Central Asiatic Journal[2], volume 44, number 1, Harrassowitz Verlag, pages 87-104
^ Dybo, Anna (2014), “Early contacts of Turks and problems of Proto-Turkic reconstruction”, in Tatarica[3], volume 2, page 9: “湩 *ṭoŋh”