gulag (n.)youdaoicibaDictYouDict[gulag 词源字典]
system of prisons and labor camps, especially for political detainees, in the former Soviet Union; rough acronym from Russian Glavnoe upravlenie ispravitel'no-trudovykh lagerei "Chief Administration of Corrective Labor Camps," set up in 1931.[gulag etymology, gulag origin, 英语词源]