Channel Four [Channel Four]
a British commercial terrestrial television station that started broadcasting in 1982 and can be seen all over Britain, except Wales, which has ↑S4C. It is paid for by selling its advertising time. It broadcasts many cultural and educational programmes, as well as documentaries (= films presenting facts about real life) and programmes for minorities. Until 2002 Channel Four was also an important ↑producer of British films with its business, Film Four.
Useful english dictionary. 2012.