Proto-IE: *swerbh- (Gr s-)
Meaning: to go around, to work smth. around, to sweep around
Old Greek: sǘrphos = thērídion mikrón, opôion empís Hsch; sürphetó-s m. `anything dragged or swept together, sweepings, refuse, litter; Hes.+; sǘrphāk-s, -kos m. = sürphetós; ? sǘrma n. 'anything trailed and dragged' (also from sǖ́rō!)
Celtic: *swerb- > Cymr chwerfu `wirbeln, umdrehen'
Russ. meaning: двигать(ся) по кругу, обрабатывать по кругу, обметать
