köken: Etymology tree German schrumpfenbor. Esperanto ŝrumpi Proto-Indo-European *bʰleh₃-der. Proto-Indo-European *bʰolh₃yom? Proto-Indo-European *dʰelh₁-der. Proto-Indo-European *dʰolh₁yom? Proto-Italic *foljom Latin foliumbor. Esperanto folio Esperanto ŝrumpfolio From ŝrumpi (“to shrink”) + folio (“leaf”). Compare German Schrumpffolie.