Underground Railroad
Underground Railway | secret aid to escaping slaves that was provided by abolitionists in the years before the American Civil War |
| radial keratotomy | radial pattern of incisions in the cornea that cause the cornea to bulge, performed to correct myopia |
| axle | a shaft on which a wheel rotates |
| axle bar | an iron bar that serves as an axletree |
cable railway
funicular
funicular railway | a railway up the side of a mountain pulled by a moving cable and having counterbalancing ascending and descending cars |
car railcar
railway car
railroad car | a wheeled vehicle adapted to the rails of railroad, three cars had jumped the rails |
cog railway
rack railway | railway for steep mountains, a cogwheel on the locomotive engages cogs on a center rail to provide traction |
| dead axle | an axle that carries a wheel but without power to drive it |
elevated railway
elevated railroad
elevated
el
overhead railway | a railway that is powered by electricity and that runs on a track that is raised above the street level |
line railway line
rail line | the road consisting of railroad track and roadbed |
live axle
driving axle | the axle of a self-propelled vehicle that provides the driving power |
locomotive
engine locomotive engine
railway locomotive | a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks |
radial
radial tire
radial-ply tire | pneumatic tire that has radial-ply casing |
radial engine
rotary engine | an internalombustion engine having cylinders arranged radially around a central crankcase |
railroad track
railroad railway | a line of track providing a runway for wheels, he walked along the railroad track |
railway
railroad
railroad line
railway line railway system | line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight |
| railway junction | a junction where two or more railway lines meet or cross |
railway station
railroad station
railroad terminal
train station
train depot | terminal where trains load or unload passengers or goods |
| scenic railway | small railway in an amusement park |
| wheel and axle | hoist so arranged that a rope unwinding from a wheel is wound onto a cylindrical drum or shaft coaxial with the wheel |
yard railway yard
railyard | an area having a network of railway tracks and sidings for storage and maintenance of cars and engines |
| radial symmetry | the property of symmetry about an axis, the starfish illustrates radial symmetry |
| radial asymmetry | the absence of symmetry about an axis |
radial artery
arteria radialis | branch of the brachial artery beginning below the elbow and extending down the forearm around the wrist and into the palm |
radial vein
vena radialis | superficial veins ascending the radial side of the forearm, combines with the ulnar veins to form the brachial vein |
radial nerve
nervus radialis
musculospiral nerve | largest branch of the brachial plexus, extends down the humerus to the lateral epicondyle where it divides into one branch that goes to the skin on the back of the hand and another that goes to the underlying extensor muscles |
| pins and needles | a sharp tingling sensation from lack of circulation |
trainman
railroader
railroad man
railwayman
railway man | an employee of a railroad |
| axle grease | a thick heavy grease used to lubricate axles |
| radial pulse | pulse of the radial artery (felt in the wrist) |
| radial velocity | velocity along the line of sight toward or away from the observer |
radial
stellate
radiate | arranged like rays or radii, radiating from a common center, radial symmetry, a starlike or stellate arrangement of petals, many cities show a radial pattern of main highways |
| radial-ply | of or relating to automobile tires that have a strip under the tread and relatively little stiffening in the sidewalls, radial-ply tires |
| radial | issuing in rays from a common center, relating to rays of light, radial heat |
| radial | relating to or moving along or having the direction of a radius, radial velocity |
| radial | relating to or near the radius, the radial aspect of the forearm |