■ noun Brit. a government notice issued to news editors requiring them not to publicize certain information for reasons of national security.
Origin
Second World War: D for defence .
■ noun Brit. a government notice issued to news editors requiring them not to publicize certain information for reasons of national security.
Origin
Second World War: D for defence .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004