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1. Architecture A wedge-shaped stone at the top of an arch, often larger or more ornamented than the other voussoirs. Also called headstone.
2. The central supporting element of a whole.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Building) Also called: headstone or quoin the central stone at the top of an arch or the top stone of a dome or vault
2. something that is necessary to connect or support a number of other related things
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
1. the wedge-shaped piece at the summit of an arch, regarded as holding the other pieces in place.
2. something on which associated things depend; foundation.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||keystone - a central cohesive source of support and stability; "faith is his anchor"; "the keystone of campaign reform was the ban on soft money"; "he is the linchpin of this firm"|
support - something providing immaterial assistance to a person or cause or interest; "the policy found little public support"; "his faith was all the support he needed"; "the team enjoyed the support of their fans"
|2.||keystone - the central building block at the top of an arch or vault|
arch - (architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it
building block - a block of material used in construction work
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
noun basis, principle, core, crux, ground, source, spring, root, motive, cornerstone, lynchpin, mainspring, fundament, quoin the keystone of the government's economic policy
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
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