keystone

A noun referring to a central, crucial element that provides support and stability, or the central stone at the top of an arch that locks the structure together.

ruСуществительное, обозначающее центральный, ключевой элемент, обеспечивающий поддержку и устойчивость, или центральный камень в вершине арки, скрепляющий всю конструкцию.esSustantivo que designa un elemento central y clave que proporciona soporte y estabilidad, o la piedra central en el ápice de un arco que mantiene unida toda la estructura.frNom désignant la pierre centrale qui verrouille une arche et assure sa stabilité, ou, au sens figuré, un élément essentiel et fondamental dont dépend tout un système ou une entreprise.deEin zentraler, tragender Stein am Scheitelpunkt eines Bogens, der die Konstruktion zusammenhält. Im übertragenen Sinn das wichtigste, grundlegende Element, auf dem etwas Wesentliches beruht.ptSubstantivo que designa o elemento central ou essencial que garante apoio e estabilidade, ou a pedra no topo de um arco que mantém toda a estrutura unida.zh名词，指拱顶中央的楔形石块，用于锁合整个拱结构；也比喻支撑整体的核心、关键或基础性要素。arاسم يدل على الحجر المركزي في قمة القوس الذي يربط بين جانبيها ويثبت البناء، أو على العنصر الأساسي والجوهري الذي تقوم عليه فكرة أو نظام أو بنية ما.

1. Central support or foundation B2 formal

   A central cohesive source of support and stability that holds something together.

   • Trust is the keystone of any strong relationship.
   • Education is often considered the keystone of a successful society.
   • The keystone of his argument was based on solid evidence.

   ruЦентральная опора или основаesPiedra clavefrClé de voûtedeZentrale Stütze oder GrundlageptApoio ou base centralzh核心支柱或基础arالدعامة الأساسية أو الأساس

   Synonyme: anchorbackbonebasisbedrockcornerstonefoundationlinchpinmainstaypillar

2. Architectural element B2 formal

   The central wedge-shaped stone at the top of an arch or vault that locks the other stones in place.

   • The ancient Romans perfected the use of the keystone in their arches.
   • The keystone was carefully carved and placed to complete the bridge.
   • Without the keystone, the arch would collapse under its own weight.

   ruЗамковый каменьesClave de arcofrClaveau centraldeSchlusssteinptPedra angularzh拱顶石arحجر العقد

   Synonyme: key

• keystones plural form
• keystones' possessive plural form
• keystone's possessive singular form