Cornerstone (Noun)
Meaning 1
A stone at the outer corner of two intersecting masonry walls.
Classification
Nouns denoting man-made objects.
Meaning 2
The fundamental assumptions from which something is begun or developed or calculated or explained; "the whole argument rested on a basis of conjecture".
Classification
Nouns denoting cognitive processes and contents.
Synonyms
Hypernyms
Hyponyms
Meaning 3
A stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies.
Classification
Nouns denoting man-made objects.