cornerstone
/ˈkɔːrnərstoʊn/
noun
- A stone that forms the base of a corner of a building, often placed during a ceremony to mark the start of construction.
- The cornerstone of the old church was carved with the year 1723.
- They placed a time capsule inside the cornerstone of the building.
- The mayor laid the cornerstone of the new library in a public ceremony.
- Something that is essential, fundamental, or the most important part of a system, belief, or organization.
- The company's cornerstone is its commitment to customer service.
- Education is the cornerstone of a prosperous society.
- Trust is the cornerstone of any strong relationship.