furlough (n.)youdaoicibaDictYouDict[furlough 词源字典]
1620s, vorloffe, from Dutch verlof, literally "permission," from Middle Dutch ver- "completely, for" + laf, lof "permission," from Proto-Germanic *laubo- (see leave (v.)). The -gh spelling predominated from 1770s and represents the "f" that had been pronounced at the end of the word but disappeared fairly soon thereafter in English.[furlough etymology, furlough origin, 英语词源]
furlough (v.)youdaoicibaDictYouDict
1783, "grant leave of absence" (to a soldier), from furlough (n.). Of employees, "lay off or suspend temporarily," by 1940. Related: Furloughed; furloughing.