Meaning of CORNERSTONE

Pronunciation:			'kornur`stown
WordNet Dictionary
	Definition:		[n]  a stone at the outer corner of two intersecting masonry walls [n]  a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies [n]  the fundamental assumptions underlying an explanation; "the whole argument rested on a basis of conjecture"
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	Synonyms:		base, basis, foundation, fundament, groundwork
	See Also:		assumption, building, edifice, explanation, stone, supposal, supposition
Thesaurus Terms
	Related Terms:		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