warder (n.)youdaoicibaDictYouDict[warder 词源字典]
c. 1400, "guardian of an entrance," from Anglo-French wardere, wardour "guardian, keeper, custodian" (Old French gardeor), agent noun from Old North French warder "to guard, keep, maintain, uphold" (Old French garder), from Frankish *wardon, from Proto-Germanic *wardon "to guard" (see ward (v.)).[warder etymology, warder origin, 英语词源]