Where does “keltarousku” come from?

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

keltarousku (Finnish): A milk-cap, Lactarius repraesentaneus

Definitions

  1. A milk-cap, Lactarius repraesentaneus

Ancestry of “keltarousku”, step by step

keltarousku 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 kelta

StepLanguageWordMeaning
1Finnishkeltayellow
2Proto-Finnickeltayellow; species of club moss used for dyeing...
3Proto-Balticgilˀtos—
Every word from Proto-Finnic -u →Every word from Finnish -u →Every word from Finnish rousku →