Definition of "monorail" []

• A single rail serving as a track for wheeled vehicles traveling on it or suspended from it. (noun)
• A railway system using a single rail. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "There weren't many people (the monorail is also unheated for the most part), so the conductor/volunteer (Dave -- Mason read his name badge, the budding secret agent that he is,) let us sit at the front by the driver's seat."
• "The monorail is only horrible because it never got finished."
• "The monorail is to get people on to and off of Sentosa Island."