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chockstone

British  
/ ˈtʃɒkˌstəʊn /

noun

  1. a stone securely jammed in a crack. It may vary in size from a pebble to a large boulder

  2. another name for chock

"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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

I have to contort my body to get under a human-sized chockstone trapped in mid-air and begin to understand, in the vaguest way, how Aron Ralston might have felt.

From The Guardian • Jan. 1, 2011

With immense labour I found a chockstone above my head, and managed to force my foot free.

From Prester John by Buchan, John