Where does “rahkarousku” come from?

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

rahkarousku (Finnish): A milk-cap, "Lactarius sphagneti"

Definitions

  1. A milk-cap, "Lactarius sphagneti"

Ancestry of “rahkarousku”, step by step

rahkarousku 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 rahka

StepLanguageWordMeaning
1Finnishrahkaquark; curd
2Proto-Finnicrahkaquark (soft creamy cheese)
Every word from Proto-Finnic -u →Every word from Finnish -u →Every word from Finnish rousku →