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cotter pin

noun, Machinery
1.
a cotter having a split end that is spread after being pushed through a hole to prevent it from working loose.
Origin
1890-1895
1890-95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cotter-pin

cotter pin

noun (machinery)
1.
a split pin secured, after passing through holes in the parts to be attached, by spreading the ends
2.
a tapered pin threaded at the smaller end and secured by a nut after insertion
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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8
9
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