Where does “hämähäkkikeinu” come from?

hämähäkkikeinu (Finnish) comes from Finnish keinu, from Finnish -u, from Proto-Finnic -u — Forms nouns from adjectives, nouns.

hämähäkkikeinu (Finnish): nest swing

Definitions

  1. nest swing

Ancestry of “hämähäkkikeinu”, step by step

hämähäkkikeinu traces back through two separate lines of ancestry.

via Finnish keinu

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

via Finnish hämähäkki

StepLanguageWordMeaning
1Finnishhämähäkkispider
Every word from Proto-Finnic -u →Every word from Finnish -u →Every word from Finnish keinu →