köken: Etymology tree Esperanto pilko Latin -ia Old French -iebor. Middle High German -īe German -eibor. Proto-Indo-European *-yósder. Ancient Greek -ῐος (-ĭos)? Ancient Greek -ῐον (-ĭon) Ancient Greek -εῖον (-eîon)lbor. Greek -είο (-eío)bor. Esperanto -ejo Esperanto pilkejo From pilko + -ejo.