parados (n.)youdaoicibaDictYouDict[parados 词源字典]
"rear wall of a trench," 1917, earlier "elevation behind a fortified place" (1853), literally "defense from the back," from French parados, from para- "defense" (see para- (2)) + dos "back" (see dossier).[parados etymology, parados origin, 英语词源]