Danube
"Danube" is an Old European river name derived from a Proto-Indo-European "*dānu". Other river names from the same root include the Dunaj, Dzvina/Daugava, Don, Donets, Dnieper, Dniestr, Dysna, Tana and Tuoni. In Rigvedic Sanskrit, "dānu" means "fluid, drop", in Avestan, the same word means "river". In the Rigveda, "Dānu" once appears as the mother of Vrtra, "a dragon blocking the course of the rivers." The Finnish word for Danube is Tonava, which is most likely derived from the word for the river in Swedish and German, "Donau". Its Sámi name "Deatnu" means "Great River". It is possible that "dānu" in Scythian as in Avestan was a generic word for "river": "Dnieper" and "Dniestr", from "Danapris" and "Danastius", are presumed to continue Scythian "*dānu apara" "far river" and "*dānu nazdya-" "near river", respectively.
Danube glaciation
The Danube glaciation or Donau glaciation (), also known as the Danube Glacial ("Donau-Glazial"), is a glacial stage of the Pleistocene epoch. It does not appear in the traditional, quadripartite ice age schema of the Alps by Albrecht Penck. The Danube stage was named by Barthel Eberl in 1930 after the River Danube. The Danube Glacial is the oldest glaciation in the Alps for which there is evidence outside of the Iller-Lech region. The Danube Stage was preceded by the Biber-Danube interglacial and followed by the Danube-Günz interglacial.