Where does “swerf” come from?

swerf (Middle English) comes from Old English ġeswearf, from Proto-Germanic swarbą, from Proto-Germanic swerbaną, from Proto-Indo-European swerbʰ- — to turn; wipe; sweep.

Ancestry of “swerf”, step by step

swerf traces back through two separate lines of ancestry.

via Old English ġeswearf

StepLanguageWordMeaning
1Old Englishġeswearf
2Proto-Germanicswarbąthat which is rubbed off; shavings
3Proto-Germanicswerbanąto rub; wipe; polish; to file
4Proto-Indo-Europeanswerbʰ-to turn; wipe; sweep

via Old English ġesweorf

StepLanguageWordMeaning
1Old Englishġesweorfiron filings; rust
Every word from Proto-Indo-European swerbʰ-Every word from Proto-Germanic swerbanąEvery word from Proto-Germanic swarbą