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climbing iron

one of a pair of spiked iron frames, strapped to the shoe, leg, or knee, to help in climbing trees, telephone poles, etc.
Also called climbing spur, spur.
Origin of climbing iron
1855-60 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for climbing irons

climbing irons

plural noun
spiked steel frames worn on the feet to assist in climbing trees, ice slopes, etc
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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