Definition from Wiktionary, the free dictionary
Named from Henry Peter, Lord Brougham (1778–1868), who either invented or popularized the vehicle.
brougham (plural broughams)
- A four-wheeled horse-drawn carriage, designed in 1839. It had an open seat for the driver in front of the closed cabin for two or four passengers.
- 1891, “Yes,” he continued, glancing out of the window. “A nice little brougham and a pair of beauties.” — Arthur Conan Doyle, ‘A Scandal In Bohemia’ (Norton 2005 p.12)
- An automobile, a sedan without a roof over the driver's seat.