| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
A system of prison camps inside the former Soviet Union used for political prisoners. Under Joseph Stalin, millions of prisoners in these camps died from starvation and maltreatment. This system was given worldwide attention in the writings of Aleksandr Solzhenitsyn. Gulag is an acronym in Russian of the name meaning Chief Administration of Corrective Labor Camps.