street in Westminster, south of Trafalgar Square: site of several government offices
See Whitehall in American Heritage Dictionary 4
(hwītˈhôlˌ, wītˈ-)
A wide thoroughfare in London, England, running north and south between Trafalgar Square and the Houses of Parliament. Named after Whitehall Palace (1529-1698), the chief residence of the Court of London, it is noted for its government offices.