Where does “Oegstgeest” come from?

Oegstgeest (English) comes from Dutch Oegstgeest, from Old Dutch gēst, from Old Dutch gist, from Proto-West Germanic jestu, from Proto-Germanic jestuz, from Proto-Indo-European yes- — to foam; to boil.

Ancestry of “Oegstgeest”, step by step

StepLanguageWordMeaning
1DutchOegstgeest—
2Old Dutchgēst—
3Old Dutchgist—
4Proto-West Germanicjestufermentation; byproducts or agents of...
5Proto-Germanicjestuzfermentation; byproducts or agents of...
6Proto-Indo-Europeanyes-to foam; to boil
Every word from Proto-Indo-European yes- →Every word from Proto-Germanic jestuz →Every word from Proto-West Germanic jestu →