a horse harnessed to the tongue of a vehicle; poler; wheeler.
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Origin of pole horse
An Americanism dating back to 1815–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for pole horse
It was different in the case of Marengo Todd, driver of the pole-horse, and entitled to "protection."The Skipper and the Skipped|Holman Day
British Dictionary definitions for pole horse
a horse harnessed alongside the shaft (pole) of a vehicleAlso called: poler
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