gu·lag also Gu·lag 
(gläg)
(gläg)n.
1.
a. A network of forced labor camps in the former Soviet Union.
b. A labor camp in this network.
2.
a. A network of prisons used especially for political dissidents.
b. A prison in such a network.
[Russian Gulag, from G(lavnoe) u(pravlenie ispravitel'no-trudovykh) lag(ereĭ), Chief Administration (of Correctional Labor) Camps.]