You searched English word "Keystone" meaning in Spanish that is "piedra clave". Keystone is a Noun. We Spell Keystone as [kee-stohn]. Keystone meaning in Spanish has been searched 1559 ( one thousand five hundred fifty nine ) times till today 07/08/2026. Get translation of the word Keystone in Urdu and Roman Urdu. Learn how to speak Keystone Word in Spanish and English. You may also find the meaning of Word Keystone in English to Spanish, Urdu, Arabic, French, German, Hindi and other languages.