cornerstone

About 1.62 uses per million words.

Meaning

1. noun A stone forming the base at the corner of a building.
2. noun Such a stone used ceremonially, often inscribed with the architect's and owner's names, dates and other details.

   The cornerstone on the Flatiron Building is set on the Fifth Avenue facade.

3. noun That which is prominent, fundamental, noteworthy, or central.

   Exceptional service is the cornerstone of the hospitality industry.

Similar words

base groundwork basis foundation fundament keystone quoin vault arch basement

Often followed by

of for in was to on and is laying

Word family

cornerstones