retread (v.)youdaoicibaDictYouDict[retread 词源字典]
"to put a new tread on (a tire)," 1908, from re- "back, again" (see re-) + tread (q.v.). The noun is attested from 1914; in World War I it was Australian slang for "a re-enlisted soldier."[retread etymology, retread origin, 英语词源]