Cornerstone in spanish
Piedra angular
pronunciation: piedɹ̩ɑngulɑɹ̩ part of speech: noun
pronunciation: piedɹ̩ɑngulɑɹ̩ part of speech: noun
In gestures
cornerstone [corner-stone] = base, pilar, piedra angular, pieza clave.
Example: Abstracts are the cornerstone of secondary publications.