keystone

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English[edit]

Pronunciation[edit]

Noun[edit]

keystone ‎(plural keystones)

  1. (architecture) The top stone of an arch.
  2. Something on which other things depend for support.
  3. A native or resident of the American state of Pennsylvania.

Translations[edit]

Derived terms[edit]

Verb[edit]

keystone ‎(third-person singular simple present keystones, present participle keystoning, simple past and past participle keystoned)

  1. (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.

Anagrams[edit]