redcap (n.)youdaoicibaDictYouDict[redcap 词源字典]
"porter at a railroad station," 1914, American English, from red (adj.1) + cap (n.). Earlier it was the name of the goldfinch, a type of hen, and a long-toothed spectre in Scottish castles.[redcap etymology, redcap origin, 英语词源]