Where does “fiāl” come from?

fiāl (Old Frisian) comes from Proto-Germanic hwehwlą, from Proto-Indo-European kʷékʷlos, from Proto-Indo-European kʷel- — to turn.

Ancestry of “fiāl”, step by step

StepLanguageWordMeaning
1Proto-Germanichwehwląwheel
2Proto-Indo-Europeankʷékʷloswheel; circle
3Proto-Indo-Europeankʷel-to turn
Every word from Proto-Indo-European kʷel- →Every word from Proto-Indo-European kʷékʷlos →Every word from Proto-Germanic hwehwlą →