<p><strong>Noun</strong></p><ul><li>A former palace in central London, England, originally built in the reign of Henry III: execution of Charles I, 1649.</li><li>The main thoroughfare in London, England, between Trafalgar Square and the Houses of Parliament.</li><li>The British government or its policies.</li><li>A city in central Ohio, near Columbus.</li><li>A city in Pennsylvania, near Pittsburgh.</li></ul>