What is "underground railway"

Railroad \Rail"road`\ (r[=a]l"r[=o]d`), Railway \Rail"way`\ (r[=a]l"w[=a]`), n.

1. A road or way consisting of one or more parallel series of iron or steel rails, patterned and adjusted to be tracks for the wheels of vehicles, and suitably supported on a bed or substructure.

   Note: The modern railroad is a development and adaptation of the older tramway.

2. The road, track, etc., with all the lands, buildings, rolling stock, franchises, etc., pertaining to them and constituting one property; as, a certain railroad has been put into the hands of a receiver. Note: Railway is the commoner word in England; railroad the commoner word in the United States. Note: In the following and similar phrases railroad and railway are used interchangeably: Atmospheric railway, Elevated railway, etc. See under Atmospheric, Elevated, etc. Cable railway. See Cable road, under Cable. Ferry railway, a submerged track on which an elevated platform runs, for carrying a train of cars across a water course. Gravity railway, a railway, in a hilly country, on which the cars run by gravity down gentle slopes for long distances after having been hauled up steep inclines to an elevated point by stationary engines. Railway brake, a brake used in stopping railway cars or locomotives. Railway car, a large, heavy vehicle with flanged wheels fitted for running on a railway. [U.S.] Railway carriage, a railway passenger car. [Eng.] Railway scale, a platform scale bearing a track which forms part of the line of a railway, for weighing loaded cars. Railway slide. See Transfer table, under Transfer. Railway spine (Med.), an abnormal condition due to severe concussion of the spinal cord, such as occurs in railroad accidents. It is characterized by ataxia and other disturbances of muscular function, sensory disorders, pain in the back, impairment of general health, and cerebral disturbance, -- the symptoms often not developing till some months after the injury. Underground railroad Underground railway.

   1. A railroad or railway running through a tunnel, as beneath the streets of a city.

   2. Formerly, a system of co["o]peration among certain active antislavery people in the United States prior to 1866, by which fugitive slaves were secretly helped to reach Canada.

      Note: [In the latter sense railroad, and not railway, was usually used.] ``Their house was a principal entrep[^o]t of the underground railroad.''
      --W. D. Howells.

Underground \Un"der*ground`\, a.

1. Being below the surface of the ground; as, an underground story or apartment.

2. Done or occurring out of sight; secret. [Colloq.]

   Underground railroad or Underground railway. See under Railroad.

n. 1 A subway system for the movement of trolley or trains. 2 (context usually capitalized English) (alternative form of Underground Railroad English)

Underground railway may refer to:

• The Underground Railroad, a network of clandestine routes by which African slaves in the 19th century United States attempted to escape
• Rapid transit, urban railways that sometimes use tunnels
• Mine railway