nounπShareThe top stone of an arch."The builder carefully placed the keystone at the very top of the arch, locking all the other stones in place. "architecturepartbuildingstructureChat with AIVocabulary GamePractice Reading
nounπShareSomething on which other things depend for support."The team's success was built on communication; clear communication was the keystone. "structurearchitecturesystemorganizationChat with AIVocabulary GamePractice Reading
nounπShareA native or resident of the American state of Pennsylvania."My grandmother is a proud keystone who grew up on a farm in Lancaster County. "personstateplaceChat with AIVocabulary GamePractice Reading
nounπShare(retail) A retail price that is double the cost price; a markup of 100%."The store uses a keystone pricing strategy, so they sell shirts that cost them $10 for $20. "businesscommercefinanceeconomyvalueChat with AIVocabulary GamePractice Reading
nounπShareThe combination of the shortstop and second baseman."The team's keystone was crucial to their success in turning double plays. "sportpositiongroupChat with AIVocabulary GamePractice Reading
verbπShareTo distort (an image) by projecting it onto a surface at an angle, which for example causes a square to look like a trapezoid."Because the projector was positioned too low, it keystoned the presentation, making the top of the screen image narrower than the bottom. "technologycomputingmediaappearanceChat with AIVocabulary GamePractice Reading
verbπShare(retail) To double the cost price in order to determine the retail price; to apply a markup of 100%."The store owner decided to keystone all of the imported toys, doubling their original cost before putting them on the shelves. "businesscommerceeconomyfinanceChat with AIVocabulary GamePractice Reading
