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cotter pin

noun, Machinery
a cotter having a split end that is spread after being pushed through a hole to prevent it from working loose.
Origin of cotter pin
1890-95 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for cotter pin
  • The ears of the cotter pin had apparently broken and allowed the cotter pin.
  • The accident occurred when the injured worker's vest was caught by the cotter pin.
  • On the other hand, a missing cotter pin in a critical location such as in a connecting rod could have serious consequences.
  • The earlier configuration incorporates a fixed shaft and cotter pin with a different aluminum impeller.
  • Probe the edges of all welded seams with a blunt tipped cotter pin removal tool.
  • Drag link and tie rod ends must be mechanically locked by cotter pin or other element.
British Dictionary definitions for cotter pin

cotter pin

noun (machinery)
a split pin secured, after passing through holes in the parts to be attached, by spreading the ends
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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