Word.ws English Dictionary

keystones

keystones is the plural of keystone.

Meaning of keystone

Noun

keystone (plural keystones)

  1. The top stone of an arch.
    • The tunnel, which is 1,000 yd. long, had been closed to passenger traffic since November 17, 1949, after some of the keystones had worked loose.1950 March, “Notes and News: Sugar Loaf Tunnel, Central Wales Line”, in Railway Magazine, page 209
  2. Something on which other things depend for support.
    • Tension between empirical and theoretical knowledge is keystone to sociological and to organizational theories, as early as in Marx's and Weber's frameworks.1999, Eliezer Geisler, Methodology, Theory, and Knowledge in the Managerial and Organizational ...
  3. A retail price that is double the cost price; a markup of 100%.
  4. The combination of the shortstop and second baseman.

See all 10 meanings of keystone

Questions about keystones

What is keystones the plural of?
Keystones is the plural of keystone.

Words near keystones in the dictionary

  1. Keystone Stater
  2. keystoned
  3. keystoneite
  4. Keystoner
  5. Keystoners
  6. keystones
  7. keystoning
  8. keystore
  9. keystores
  10. keystream
  11. keystreams

Source and license

Adapted from Wiktionary: keystones (page history and authors); keystone (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “keystones.” Word.ws, https://word.ws/keystones. Based on Wiktionary, CC BY-SA 4.0.