cor·ner·stone | \ ˈkȯr-nər-ˌstōn \

Definition of cornerstone 

1 : a stone forming a part of a corner or angle in a wall specifically : such a stone laid at a formal ceremony

2 : a basic element : foundation a cornerstone of foreign policy

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Examples of cornerstone in a Sentence

Officials held a ceremony to lay the cornerstone for a new library. Trust is the cornerstone of their relationship.

Recent Examples on the Web

Why slow the positive momentum of the rebuild that has featured the emergence of Lauri Markkanen as a potential franchise cornerstone and the addition of two potentially solid first-round draft picks by not matching? K.c. Johnson,, "Bulls must match Zach LaVine's 4-year, $78M offer sheet from Kings to keep rebuild's momentum," 6 July 2018 Combined with the 2016 retirement of franchise cornerstone Tim Duncan, Parker’s departure leaves Manu Ginobili as the last remaining piece from what remains the NBA’s all-time winningest trio. Jeff Mcdonald, San Antonio Express-News, "Parker stunner: Iconic Spurs point guard headed to Charlotte," 6 July 2018 So many of Payton's limitations melt away when evaluated as a near-minimum-salary player rather than a potential franchise cornerstone. Rob Mahoney,, "NBA Free Agency 2018: Under-the-Radar Grades," 4 July 2018 The contract, worth about $11 million annually, will lock up the franchise cornerstone defenseman through the 2026-27 season and cross off the most important item on the Kings’ to-do list. Curtis Zupke,, "Drew Doughty agrees to eight-year contract extension with Kings," 30 June 2018 Will Chicago be able to draft a franchise cornerstone to complement Kris Dunn, Zach LaVine and Lauri Markkanen? Manny Navarro, miamiherald, "After quiet draft night, Pat Riley explains why this summer may be the same for Heat," 22 June 2018 Will Chicago be able to draft a franchise cornerstone to complement Kris Dunn, Zach LaVine and Lauri Markkanen? Mac Engel, star-telegram, "Why the Dallas Mavericks should avoid Texas center Mo Bamba," 19 June 2018 Will Chicago be able to draft a franchise cornerstone to complement Kris Dunn, Zach LaVine and Lauri Markkanen? Brendan Marks, charlotteobserver, "Jerome Robinson's NBA journey begins Thursday, but first? A trip back home (sort of)," 19 June 2018 Tight end Hayden Hurst seems to be the surest thing, but quarterback Lamar Jackson and offensive tackle Orlando Brown Jr. could become franchise cornerstones. The Baltimore Sun,, "Staff grades for the Ravens' 2018 draft class," 30 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cornerstone.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of cornerstone

13th century, in the meaning defined at sense 1

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Last Updated

11 Sep 2018

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Time Traveler for cornerstone

The first known use of cornerstone was in the 13th century

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English Language Learners Definition of cornerstone

: a stone that forms part of a corner in the outside wall of a building and that often shows the date when the building was built

: something of basic importance

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Comments on cornerstone

What made you want to look up cornerstone? Please tell us where you read or heard it (including the quote, if possible).


occurring twice a year or every two years

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