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(of a railroad or section of a railroad's route) having but one set of tracks, so that trains going in opposite directions must be scheduled to meet only at points where there are sidings.
having a narrow scope; one-track:
He has a single-track mind.
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for
an off-road trail used by cyclists, wide enough for only one bicycle at a time
(of a railway) having only a single pair of lines, so that trains can travel in only one direction at a time
(of a road) only wide enough for one vehicle
able to think about only one thing; one-track
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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