Keystone tarimas:

/'ki:stoun/

Keystone audio:

Žodžio paaiškinimas anglų kalba:

• noun: Architecture The central wedge-shaped stone of an arch that locks its parts together. Also called headstone.
• noun: The central supporting element of a whole.

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Lietuviškos reikšmės:

kertinis akmuo

pagrindinis principas ar plano punktas