Rail - Science, Technology, Biology, and Medicine

Science, Technology, Biology, and Medicine

• Picatinny rail, a bracket used on some firearms in order to provide a standardized mounting platform for telescopic sights and other accessories
• Rails or Rallidae, a family of birds which includes crakes, coots, and gallinules
• Railing, a slang term for insufflation (medicine), whereby a substance, such as cocaine, is inhaled for recreational effects
• Structural
  • 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
  • Theatre rail, see batten (theater), from which lighting fixtures, theatrical scenery, tabs or curtains may be hung
  • Curtain rail, see curtain, from which curtains are hung
  • Door rails, see frame and panel, a horizontal outside member on a door or in a frame and panel construction
• Electrical engineering
  • Power supply rail or voltage rail, a single voltage provided by a power supply unit