Black Maria
a popular name in the United States applied to the covered wagon, generally painted black, used for the conveyance of prisoners; properly, a prison van.
BLACK MONDAY. (1) A name for Easter Monday, in remembrance of the dreadful experiences of the army of Edward III., before Paris, on Easter Monday, April 14, 1360. Many soldiers and horses perished from the extreme cold. (2) The 27th of Feb., 1865, a memorable day in Melbourne, Australia, when the country round was swept by a destructive sirocco.