(A). A light two-wheeled cab, in which the driver sits behind the vehicle, and communicates with the passenger through a trap-door in the roof. Invented by Aloysius Hansom of York (1803-1882). Hansom was by trade an architect at Birmingham and at Hinckley in Leicestershire.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894