Definitions for "Gulag"
a Russian prison camp for political prisoners
Gulag (, ) is an acronym for Главное Управление Исправительно—Трудовых Лагерей и колоний, "Glavnoye Upravleniye Ispravitelno-trudovykh Lagerey i kolonii", "The Chief Directorate [or Administration] of Corrective Labour Camps and Colonies" of the NKVD.