a railroad having locomotives with a cogged center driving wheel engaging with a cogged rail, to provide sufficient traction for climbing steeper grades than is possible with ordinary wheels.
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Origin of cog railway
An Americanism dating back to 1895–1900
Also called rack railway.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for cog railway
/ (ˈkɒɡˌweɪ) /
mainly US other terms for rack railway
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