Where does “leppärousku” come from?

leppärousku (Finnish) comes from Finnish rousku, from Finnish -u, from Proto-Finnic -u — Forms nouns from adjectives, nouns.

leppärousku (Finnish): Either of the two species of milk-caps

Definitions

  1. Either of the two species of milk-caps

Ancestry of “leppärousku”, step by step

leppärousku traces back through two separate lines of ancestry.

via Finnish rousku

StepLanguageWordMeaning
1FinnishrouskuA milk-cap
2Finnish-uForms nouns from verbs. Most common with "e"- and...
3Proto-Finnic-uForms nouns from adjectives, nouns

via Finnish leppä

StepLanguageWordMeaning
1FinnishleppäAn alder, any of the trees in the genus "Alnus";...
2Proto-Finnicleppäalder; blood
3Proto-Balticléiˀpāˀlinden tree

Words derived from “leppärousku

Every word from Proto-Finnic -uEvery word from Finnish -uEvery word from Finnish rousku