Where does “*aviolum” come from?

*aviolum (Vulgar Latin) comes from Latin avus, from Proto-Celtic abū, from Proto-Indo-European h₂ep- — water, body of water.

Ancestry of “*aviolum”, step by step

StepLanguageWordMeaning
1Latinavusgrandfather; an ancestor, a progenitor, a...
2Proto-Celticabūriver
3Proto-Indo-Europeanh₂ep-water, body of water

Words derived from “*aviolum

Every word from Proto-Indo-European h₂ep-Every word from Proto-Celtic abūEvery word from Latin avus