keystone keystone  /ˈki ˌstoʊn/


  1. (n) a central cohesive source of support and stability
  2. (n) the central building block at the top of an arch or vault


  1. Biologists talk about keystone species essential for the proper function of an ecosystem; Suzuki is a keystone guy.
  2. These neighbors, edgy of late about China's new military strength, see Vietnam as a keystone to regional stability.


  1. Obama Tells Keystone Foes He Will Unveil Climate Measures

    With his administration under pressure from environmentalists to reject the Keystone XL pipeline project, President Barack Obama plans to unveil a package of separate actions next month focused on curbing U.S. greenhouse gas emissions.
    on June 14, 2013     Source: Bloomberg

  2. Keystone XL: the 'Kim Kardashian of energy'?

    Keystone XL plays an outsize role in US energy discourse, earning the nickname "the Kim Kardashian of energy" from one US senator. But Keystone XL serves as an important touchstone for both its supporters and detractors. 
    on June 13, 2013     Source: The Christian Science Monitor

  3. Keystone Sports to pay city of Chester $500K

    CHESTER — Keystone Sports and Entertainment will pay the city of Chester $500,000 over the next four years to square up on a payment originally due in 2010.
    on June 12, 2013     Source: Delaware County Daily Times


  1. At a press conference after the meeting with Speaker Michael Martin and the leaders of major and minority parties, Mr Brown said: "I believe that the keystone of any reform must be to switch from self-regulation to independent external regulation."
    on May 18, 2009 By: Gordon Brown Source: BBC News

  2. "To call the federal police Keystone Kops is disgraceful. The federal police are integral to the fight against terrorism in this country," Howard said.
    on Jul 24, 2007 By: John Howard Source: Hindu

  3. "The federal police clarified that that report wasn't correct," Mr Beattie said. "Now my comments in relation to Keystone Cops were made prior to that being clarified by police."
    on Jul 24, 2007 By: Peter Beattie Source: The Age

Word of the Day
languish languish
/ˈlæŋɡ wɪʃ /