Where does “reppuruisku” come from?

reppuruisku (Finnish) comes from Finnish ruisku, from Finnish -u, from Proto-Finnic -u — Forms nouns from adjectives, nouns.

reppuruisku (Finnish): knapsack sprayer

Definitions

  1. knapsack sprayer

Ancestry of “reppuruisku”, step by step

reppuruisku traces back through two separate lines of ancestry.

via Finnish ruisku

StepLanguageWordMeaning
1Finnishruiskusprayer, squirt, douche; syringe
2Finnish-uForms nouns from verbs. Most common with "e"- and...
3Proto-Finnic-uForms nouns from adjectives, nouns

via Finnish reppu

StepLanguageWordMeaning
1Finnishreppubackpack; any kind of bag
2Old Swedishskræppa—
Every word from Proto-Finnic -u →Every word from Finnish -u →Every word from Finnish ruisku →