ˌNational ˈTheatre, the BrE AmE abbreviation , the NT ( also the Royal National Theatre )
a modern building on the ↑ South Bank in London containing three theatres, the Olivier, the Lyttelton, and the Cottesloe. It is the home of the Royal National Theatre Company, which is famous for the high quality of its actors and which performs a wide variety of serious plays, both old and modern. Some people think that the building is ugly.