from The American HeritageĀ® Dictionary of the English Language, 4th Edition

  • n. A distance between the rails of a railroad track that is less than the standard width of 56 1/2 inches (143.5 centimeters).
  • n. A locomotive, car, or railway line of this gauge.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A railway gauge (distance between the two lines) that is less than the standard gauge (often quoted as 56 inches)

from the GNU version of the Collaborative International Dictionary of English

  • adj. See Note under Gauge, n., 6.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a railroad track (or its width) narrower than the standard 56.5 inches


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