luggage (n.)youdaoicibaDictYouDict[luggage 词源字典]
1590s, from lug (v.) "to drag" + -age; so, literally "what has to be lugged about" (or, in Johnson's definition, "any thing of more weight than value"). In 20c., the usual word for "baggage belonging to passengers."[luggage etymology, luggage origin, 英语词源]