[mass noun]suitcases or other bags in which to pack personal belongings for traveling 行李箱(包) ■(figurative)past experiences or long-held ideas and opinions perceived as burdensome encumbrances (喻)包袱,负担 they carry some psychological luggage. 他们有些心理包袱。
语源
late 16th cent. (originally denoting inconveniently heavy baggage): from lug + -age