Where does “kolo” come from?

kolo (Old Dutch) comes from Proto-Germanic kulą, from Proto-Indo-European gʷol-, from Proto-Indo-European ǵwelH- — to burn; to shine.

Ancestry of “kolo”, step by step

StepLanguageWordMeaning
1Proto-Germanickulącoal
2Proto-Indo-Europeangʷol-—
3Proto-Indo-EuropeanǵwelH-to burn; to shine
Every word from Proto-Indo-European ǵwelH- →Every word from Proto-Indo-European gʷol- →Every word from Proto-Germanic kulą →