Where does “elster” come from?

elster (Middle High German) comes from Old High German agalstra, from Proto-West Germanic agastrijā, from Proto-West Germanic ag-ad- ~ ag-at-, from Proto-West Germanic agu, from Proto-Germanic agō, from Proto-Indo-European h₂oḱ-éh₂, from Proto-Indo-European h₂eḱ- — sharp.

Ancestry of “elster”, step by step

StepLanguageWordMeaning
1Old High Germanagalstra—
2Proto-West Germanicagastrijāmagpie
3Proto-West Germanicag-ad- ~ ag-at-—
4Proto-West Germanicagumagpie
5Proto-Germanicagō—
6Proto-Indo-Europeanh₂oḱ-éh₂—
7Proto-Indo-Europeanh₂eḱ-sharp

Words derived from “elster”

Every word from Proto-Indo-European h₂eḱ- →Every word from Proto-Indo-European h₂oḱ-éh₂ →Every word from Proto-Germanic agō →