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[kawr-ner-stohn] /ˈkɔr nərˌstoʊn/

a uniting two masonry walls at an intersection.
a representing the nominal starting place in the construction of a monumental building, usually carved with the date and laid with appropriate ceremonies.
something that is essential, indispensable, or basic:
The cornerstone of democratic government is a free press.
the chief foundation on which something is constructed or developed:
The cornerstone of his argument was that all people are created equal.
a stone at the corner of a wall, uniting two intersecting walls; quoin
a stone placed at the corner of a building during a ceremony to mark the start of construction
a person or thing of prime importance; basis: the cornerstone of the whole argument

late 13c., from corner (n.) + stone (n.). The figurative use is from early 14c.

I endorse without reserve the much abused sentiment of Governor M’Duffie, that “Slavery is the corner-stone of our republican edifice;” while I repudiate, as ridiculously absurd, that much lauded but nowhere accredited dogma of Mr. Jefferson, that “all men are born equal.” No society has ever yet existed, and I have already incidentally quoted the highest authority to show that none ever will exist, without a natural variety of classes. [James H. Hammond, “Letter to an English Abolitionist” 1845]


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  • Cornerman

    [kawr-ner-man, -muh n] /ˈkɔr nərˌmæn, -mən/ noun, plural cornermen [kawr-ner-men, -muh n] /ˈkɔr nərˌmɛn, -mən/ (Show IPA) 1. Basketball. a forward. 2. Ice Hockey. a player who is adept at gaining control of the puck in the areas of the rink.

  • Corner-table

    noun 1. a table of the 18th century having a triangular top with a triangular drop leaf of the same size.

  • Cornetcy

    /ˈkɔːnɪtsɪ/ noun (pl) -cies 1. (obsolete) the commission or rank of a cornet

  • Cornetfish

    [kawr-net-fish] /kɔrˈnɛtˌfɪʃ/ noun, plural (especially collectively) cornetfish (especially referring to two or more kinds or species) cornetfishes. 1. any of several slender of the family Fistulariidae, of tropical seas, having an elongated snout and bony plates instead of scales.

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