Rail

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Look up rail in Wiktionary, the free dictionary.

Rail or rails may refer to:

Transport:

• As a generic term for railways, rail transport and related matters
• Specifically rail tracks (or "railway lines") - the hot rolled steel running surface used in railways or tramways (or their predecessors made of other materials such as wood, cast iron or stone), of various profiles
• Conductor rail, a structural steel surface fitted alongside a rail track to provide electrical power to the train via a contact shoe
• RAIL (magazine), a magazine on the subject of current rail transport in the United Kingdom
• Crayon Rails, the generic term for a board game which recreates the building of railroads via the use of crayons

Biological classification:

• Rails or Rallidae, a genus of birds which includes crakes, coots, and gallinules

Structural use:

• Guard rail, for protective separation of persons (including those in vehicles) from dangerous places or situations
• Hand rail, for physical support, such as on stairways and steps
• A structural item from which items may be hung, for instance:
  • Theatre Rail, from which lighting fixtures, theatrical scenery, tabs or curtains may be hung
  • Curtain rail, from which curtains are hung
• Door rails, a horizontal outside member on a door or in a frame and panel construction

Electrical engineering:

• • Power supply rail, a voltage rail. A single voltage provided by a power supply unit

Motor engineering

• Common rail, a fuel injection supply system

Acronyms:

• Rural Appalachian Improvement League or RAIL is a non-profit corporation based in Mullens, West Virginia, USA

Miscellaneous uses

• Picatinny rail, a bracket used on some firearms in order to provide a standardized mounting platform for telescopic sights and other accessories
• "Railing", may be encountered as a slang term for Insufflation (medicine), whereby a substance, such as cocaine, is inhaled for recreational effects; or as an archaic term for sexual intercourse
• Ruby on Rails, is often shortened to Rails, is an open source web application framework for the Ruby programming language.

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