Cornerstone
[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"
Related Information
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, i