Where does “männynrousku” come from?

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

männynrousku (Finnish): A milk-cap, Lactarius musteus

Definitions

  1. A milk-cap, Lactarius musteus

Ancestry of “männynrousku”, step by step

männynrousku 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 mänty

StepLanguageWordMeaning
1Finnishmäntypine; pine, pinewood; Scots pine, "Pinus...
2Proto-Finnicmäntüpine
3Proto-Finnicmäntämixing utensil made of the top of a young pine
Every word from Proto-Finnic -uEvery word from Finnish -uEvery word from Finnish rousku