Cornerstone Meaning

There are 3 meaning(s) for word Cornerstone

Meaning 1 : the fundamental assumptions from which something is begun or developed or calculated or explained

    Synonyms : base,  basis,  foundation,  fundament,  groundwork
Meaning 2 : a stone at the outer corner of two intersecting masonry walls

Meaning 3 : a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies