keystone, key, headstone
(noun) the central building block at the top of an arch or vault
anchor, mainstay, keystone, backbone, linchpin, lynchpin
(noun) 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”
Source: WordNet® 3.1
keystone (plural keystones)
(architecture) The top stone of an arch.
Something on which other things depend for support.
A native or resident of the American state of Pennsylvania.
(retail) A retail price that is double the cost price; a markup of 100%.
(baseball) The combination of the shortstop and second baseman.
keystone (third-person singular simple present keystones, present participle keystoning, simple past and past participle keystoned)
(transitive) To distort (an image) by projecting it onto a surface at an angle, which for example causes a square to look like a trapezoid.
(transitive, retail) To double the cost price in order to determine the retail price; to apply a markup of 100%.
• keynotes, keytones
Keystone
A census-designated place in Colorado.
A city and town in Iowa.
A ghost town in North Dakota.
A town in South Dakota.
• keynotes, keytones
Source: Wiktionary
Key"stone`, n. (Arch.)
Definition: 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. Keystone State, the State of Pennsylvania; -- so called from its having been the central State of the Union at the formation of the Constitution.
Source: Webster’s Unabridged Dictionary 1913 Edition
1 May 2025
(adjective) of or relating to an economy, the system of production and management of material wealth; “economic growth”; “aspects of social, political, and economical life”
The earliest credible evidence of coffee-drinking as the modern beverage appeared in modern-day Yemen. In the middle of the 15th century in Sufi shrines where coffee seeds were first roasted and brewed for drinking. The Yemenis procured the coffee beans from the Ethiopian Highlands.
