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WORDNET DICTIONARY
OXFORD DICTIONARY
THESAURUS

WORDNET DICTIONARY

Noun cornerstone has 3 senses

• cornerstone(n = noun.cognition) base, basis, foundation, fundament, groundwork - the fundamental assumptions from which something is begun or developed or calculated or explained; "the whole argument rested on a basis of conjecture"
is a part of explanation
has particulars: meat and potatoes
is a kind of assumption, supposal, supposition

• cornerstone(n = noun.artifact) Array - a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies; Array
is a part of building, edifice
is a kind of stone

• cornerstone(n = noun.artifact) Array - a stone at the outer corner of two intersecting masonry walls; Array
is a part of building, edifice
is a kind of stone

OXFORD DICTIONARY

THESAURUS

cornerstone

bench mark, cardinal point, chief thing, climax, core, crisis, critical point, crux, essence, essential, essential matter, first stone, footstone, foundation stone, fundamental, gist, gravamen, great point, headstone, heart, high point, important thing, issue, kernel, keystone, landmark, main point, main thing, material point, meat, milestone, nub, pith, pivot, quoin, real issue, salient point, sine qua non, substance, substantive point, the bottom line, the point, turning point

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