cornerstone

US /ˈkɔːr.nɚ.stoʊn/
UK /ˈkɔːr.nɚ.stoʊn/
"cornerstone" picture
1.

piedra angular, base

an important quality or feature on which a particular thing depends or is based

:
Trust is the cornerstone of any strong relationship.
La confianza es la piedra angular de cualquier relación sólida.
Education is the cornerstone of a prosperous society.
La educación es la piedra angular de una sociedad próspera.
2.

piedra angular

a stone that forms the base of a corner of a building, especially one laid at a formal ceremony

:
The mayor laid the cornerstone for the new library.
El alcalde colocó la piedra angular de la nueva biblioteca.
The date of construction was carved into the cornerstone.
La fecha de construcción estaba grabada en la piedra angular.