Where does “watho” come from?

watho (Old Dutch) comes from Proto-Germanic waþwô, from Proto-Indo-European wat- — curved.

Ancestry of “watho”, step by step

StepLanguageWordMeaning
1Proto-Germanicwaþwôcurve; bend; muscle; calf of the leg
2Proto-Indo-Europeanwat-curved
Every word from Proto-Indo-European wat-Every word from Proto-Germanic waþwô