keystone

== English == === Etymology === From key +‎ stone. Definition 4 (retail) possibly originated in the jewelry industry in the magazine called "Jewelers' Circular-Keystone". === Pronunciation === IPA(key): /ˈkiː.stəʊn/ Rhymes: -iːstəʊn === Noun === keystone (plural keystones) (architecture) The top stone of an arch. Something on which other things depend for support. (retail) A retail price that is double the cost price; a markup of 100%. (baseball) The combination of the shortstop and second baseman. ==== Derived terms ==== ==== Translations ==== === Verb === 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%. === References === === Anagrams === keynotes, keytones