Definition of Keystone

1. Noun. A central cohesive source of support and stability. "He is the linchpin of this firm"

Exact synonyms: Anchor, Backbone, Linchpin, Lynchpin, Mainstay
Generic synonyms: Support
Derivative terms: Anchor

2. Noun. The central building block at the top of an arch or vault.
Exact synonyms: Headstone, Key
Group relationships: Arch
Generic synonyms: Building Block
Specialized synonyms: Coign, Coigne, Quoin

Definition of Keystone

1. n. The central or topmost stone of an arch. This in some styles is made different in size from the other voussoirs, or projects, or is decorated with carving. See Illust. of Arch.

Definition of Keystone

1. Noun. (architecture) The top stone of an arch. ¹

2. Noun. A native or resident of the American state of Pennsylvania. ¹

¹ Source: wiktionary.com

Definition of Keystone

1. the central stone of an arch [n -S]

Lexicographical Neighbors of Keystone

keyseated
keyseating
keyseats
keysender
keysenders
keyserver
keyservers
keyset
keysets
keysmith
keysmiths
keyspace
keyspaces
keyster
keysters
keystone (current term)
keystone corner
keystone pricing
keystone species
keystoned
keystoneite
keystones
keystream
keystreams
keystroke
keystroked
keystrokes
keystroking
keytar
keytarist

Literary usage of Keystone

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Book of American Pastimes: Containing a History of the Principal Base by Charles A. Peverelly (1866)
"keystone and Atlantic. Score, 25 to 18, in favor of the latter. October 16.—keystone and National, in Washington. Score, 41 to 26, in favor of the latter. ..."

2. Handbook of Building Construction: Data for Architects, Designing and by George Albert Hool, Nathan Clarke Johnson (1920)
"The highest or center stone is called the keystone or key block. ... The voussoirs between the keystone and the springers are called collectively the haunch ..."

3. Obsolete American Securities and Corporations by Roland Mulville Smythe (1911)
"keystone Knitter & Needle Co. New Jersey Charter void 1909. For nonpayment of taxes for three ... keystone Real Estate Co. Delaware Charter repealed 1905. ..."

4. A Manual of Civil Engineering by William John Macquorn Rankine, William J. Millar (1907)
"To determine with precision the depth required for the keystone of an arch by direct ... The best course in practice is to assume a depth for the keystone ..."

5. Trusts, Pools, and Corporations by William Zebina Ripley (1916)
"THE keystone WATCH CASE1 Unfair Practice As might be expected in a record so voluminous, ... The present keystone company is the second of that name, ..."

6. Journal by Iron and Steel Institute (1889)
"The blast is heated to a temperature of 1500° F.* The keystone Ironworks. ... Mo., by the keystone Ironworks Company, is published in the Iron Age. ..."

7. The Black Hills, Or, The Last Hunting Ground of the Dakotahs: A Complete by Annie D. Tallent (1899)
"The Rapid City & keystone stage line passes through the town ... keystone. keystone, the youngest and now richest of the mining ..."

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