Where does “rocko” come from?

rocko (Old Dutch) comes from Proto-Germanic rukkô, from Proto-Indo-European rukn-, from Proto-Indo-European ruk-.

Ancestry of “rocko”, step by step

StepLanguageWordMeaning
1Proto-Germanicrukkôspinning wheel, distaff
2Proto-Indo-Europeanrukn-—
3Proto-Indo-Europeanruk-—

Words derived from “rocko”

Every word from Proto-Indo-European ruk- →Every word from Proto-Indo-European rukn- →Every word from Proto-Germanic rukkô →