Aller

From Old High German Alara, from earlier Elera and Alera, of uncertain origin:.

• From Proto-Germanic *alizō (“alder”) + *ahwō (“water”), meaning "alder water".
• From the Proto-Indo-European root *h₁ey- common in many other river names, such as the Allia in Latium, Alaunus in some Celtic sites, and the Ille in Brittany. See also French aller (“to go”), German eilen (“to hasten, hurry”), Swedish ila. More at Aller.

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die Aller f (proper noun, usually definite, definite genitive der Aller)

1. A river in Germany

• Ferguson, Robert (1862): The River-names of Europe, p. 71