<p><strong>Noun</strong></p><ul><li>a bar of wood or metal fixed horizontally for any of various purposes, as for a support, barrier, fence, or railing.</li><li>a fence; railing.</li><li>one of two fences marking the inside and outside boundaries of a racetrack.</li><li>one of a pair of steel bars that provide the running surfaces for the wheels of locomotives and railroad cars.</li><li>the railroad as a means of transportation: to travel by rail.</li><li>rails, stocks or bonds of railroad companies.</li><li>Nautical. a horizontal member capping a bulwark.</li><li>Carpentry, Furniture. any of various horizontal members framing panels or the like, as in a system of paneling, paneled door, window sash, or chest of drawers.</li><li>Slang. a line of cocaine crystals or powder for inhaling through the nose.</li></ul><p><strong>Verb</strong></p><ul><li>to furnish or enclose with a rail or rails.</li></ul>