- keyring drive,
- keystone comedy,
- keystone joist,
- keystone kop,
- keystone species,
- keystone state
Origin of keystone
Examples from the Web for keystone
Congress is nearing a vote on the Keystone XL pipeline, and lawmakers made their cases for—and against—it Sunday.
Therefore, we should—you guessed it—develop the Canadian tar sands and build the Keystone pipeline.How Canadian Oilmen Pinkwash the Keystone Pipeline|Jay Michaelson|December 28, 2014|DAILY BEAST
From the looks of it, mistletoe is a keystone species and plays a crucial role in that forest ecosystem.
But if Clinton waded into the natural gas debate, she entirely avoided the Keystone one.Hillary Praises Fracking, Stays Silent on Keystone|David Freedlander|December 2, 2014|DAILY BEAST
They have made Keystone XL the poster child of their climate-change efforts.
Liberty and fraternity were the two springers of the new arch; its keystone was to be equality.The Life of Napoleon Bonaparte|William Milligan Sloane
This last terrible experience has been the keystone of my regeneration.Yolanda: Maid of Burgundy|Charles Major
Over the windows the bricks, of special shapes, were arranged as in a flat arch, with a keystone that jutted slightly.Helen with the High Hand (2nd ed.)|Arnold Bennett
The keystone of the budget in Mr. Gladstone's conception was the position to be assigned in it to the income-tax.
Political education is like the keystone to the arch—the strength of the whole depends upon it.Pelham, Complete|Edward Bulwer-Lytton
"stone in the middle of an arch, which holds up the others," 1630s, from key (n.1) in figurative sense of "that which holds together other parts" + stone. Figurative sense is from 1640s. Pennsylvania was called the Keystone State because of its position (geographical and political) in the original American confederation, between northern states and southern ones. Keystone cops were the bumbling police in the slapstick silent movies produced by Keystone Company, formed by Canadian-born U.S. film director Mack Sennett (1884-1960) in 1912.