skelm (n.)youdaoicibaDictYouDict[skelm 词源字典]
also skellum, "a rascal, scamp, scoundrel," 1610s, from Dutch schelm, from German schelm "rascal, devil, pestilence, etc.," from Old High German scelmo. Used by Dryden, but "Now arch. (except in S.Africa)" [OED].[skelm etymology, skelm origin, 英语词源]