Where does “pustella” come from?

pustella (Vulgar Latin) comes from Latin pustula, from Finnish pus-, from Proto-Indo-European bew- — "low-pitch humming noise".

Ancestry of “pustella”, step by step

StepLanguageWordMeaning
1Latinpustulainflamed sore, blister, pustule
2Finnishpus-—
3Proto-Indo-Europeanbew-"low-pitch humming noise"

Words derived from “pustella”

Every word from Proto-Indo-European bew- →Every word from Finnish pus- →Every word from Latin pustula →