Where does “vesilinna” come from?

vesilinna (Finnish) comes from Finnish vesi, from Proto-Finnic veci, from Arabic وعاء — vessel, container, bowl.

Ancestry of “vesilinna”, step by step

vesilinna traces back through two separate lines of ancestry.

via Finnish vesi

StepLanguageWordMeaning
1Finnishvesiwater; lake; rheum
2Proto-Finnicveciwater
3Arabicوعاءvessel, container, bowl

via Finnish Linna

StepLanguageWordMeaning
1FinnishLinnacastle large fortified residential building
2Proto-Finniclitnatown, city; fortification, fortress
Every word from Arabic وعاء →Every word from Proto-Finnic veci →Every word from Finnish vesi →