Where does “Klärgrube” come from?

Klärgrube (German) comes from German Grube, from Middle High German gruobe, from Middle High German gruoba, from Proto-Germanic grōbō, from Proto-Germanic grabaną, from Proto-Indo-European gʰrābʰ- — to dig, scratch, scrape.

Klärgrube (German): septic tank

Definitions

  1. septic tank

Ancestry of “Klärgrube”, step by step

Klärgrube traces back through two separate lines of ancestry.

via German Grube

StepLanguageWordMeaning
1GermanGrubepit; mine
2Middle High Germangruobe—
3Middle High Germangruoba—
4Proto-Germanicgrōbōhole, ditch, pit
5Proto-Germanicgrabanąto dig; to engrave, scratch
6Proto-Indo-Europeangʰrābʰ-to dig, scratch, scrape

via German klären

StepLanguageWordMeaning
1Germanklärento clarify, to clear up (an issue or misunderstanding), to fill in unknown details, to resolve, to sort out (a problem or a question)
2Middle High Germanklæren—
Every word from Proto-Indo-European gʰrābʰ- →Every word from Proto-Germanic grabaną →Every word from Proto-Germanic grōbō →