Where does “akvopilko” come from?

akvopilko (Esperanto) comes from Esperanto pilko, from Polish piłka, from Latin pila, from Latin pīlus, from Latin pīlum, from Proto-Italic pistlom, from Proto-Indo-European pis-tlo-, from Proto-Indo-European peys- — to grind, to crush.

akvopilko (Esperanto): water polo

Definitions

water polo

Ancestry of “akvopilko”, step by step

akvopilko traces back through two separate lines of ancestry.

via Esperanto pilko

Step	Language	Word	Meaning
1	Esperanto	pilko	ball
2	Polish	piłka	ball; Diminutive of piła
3	Latin	pila	mortar; pillar; pier
4	Latin	pīlus	a hair
5	Latin	pīlum	a pounder, pestle
6	Proto-Italic	pistlom	—
7	Proto-Indo-European	pis-tlo-	—
8	Proto-Indo-European	peys-	to grind, to crush

via Esperanto akvo

Step	Language	Word	Meaning
1	Esperanto	akvo	water
2	Italian	acqua	water; lane; inflection of acquare: ##...
3	Latin	aqua	water
4	Proto-Italic	akʷā	water
5	Proto-Indo-European	h₂ekʷeh₂	water, flowing water

Every word from Proto-Indo-European peys- →Every word from Proto-Indo-European pis-tlo- →Every word from Proto-Italic pistlom →