Where does “Nachttöpfchen” come from?

Nachttöpfchen (German) comes from German Nachttopf, from German nacht, from Middle High German naht, from Old High German naht, from Proto-West Germanic naht, from Proto-Germanic nahts, from Proto-Indo-European nókʷts, from Proto-Indo-European negʷ- — bare, naked.

Ancestry of “Nachttöpfchen”, step by step

StepLanguageWordMeaning
1GermanNachttopfchamber pot
2Germannachtnight
3Middle High Germannahtnight
4Old High Germannahtnight
5Proto-West Germanicnahtnight
6Proto-Germanicnahtsnight
7Proto-Indo-Europeannókʷtsnight
8Proto-Indo-Europeannegʷ-bare, naked
Every word from Proto-Indo-European negʷ- →Every word from Proto-Indo-European nókʷts →Every word from Proto-Germanic nahts →