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climbing iron

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noun
  1. one of a pair of spiked iron frames, strapped to the shoe, leg, or knee, to help in climbing trees, telephone poles, etc.
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Origin of climbing iron

First recorded in 1855–60
Also called climbing spur, spur.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for climbing irons

climbing irons

pl n
  1. spiked steel frames worn on the feet to assist in climbing trees, ice slopes, etc
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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