Can you define concentration camp?

In general terms concentration camps are outside the normal legal system of the country and people are sent there without trial, usually on the orders of an adminstrator or official. The prisoners usually have no rights and can be abused and ill treated - or worse. Inadequate food, brutality and sadism are commonplace in such camps.

The inmates are typically political dissidents and/or members of minority groups hated or feared by the government/resistance fighters.

Originally, the term was used in English in the 2nd Boer War (1899-1902) when the British were fighting Boer guerrillas. In order to deprive the guerrillas of food and shelter farming families living in the areas where the guerrillas were operating were herded into concentration camps and their homes were burnt down. Conditions in these camps were appalling and about 26,000 of the 127,000 inmates died within two years.