noun (n)

• a bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll(noun.artifact)

  Synonym:
  rail, rails, track
  

  source: wordnet30
• a chute down which logs can slide(noun.artifact)

  source: wordnet30
• a narrow platform extending from the stage into the audience in a theater or nightclub etc.(noun.artifact)

  source: wordnet30
• a strip of level paved surface where planes can take off and land(noun.artifact)

  source: wordnet30
• The channel of a stream.(noun)

  source: webster1913