Dictionary Check: cornerstone
"cornerstone" is a valid word!
Scrabble
13
points
Words with Friends
16
points
Definition
noun
the fundamental assumptions from which something is begun or developed or calculated or explained
Example:
"the whole argument rested on a basis of conjecture"
noun
a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies
noun
a stone at the outer corner of two intersecting masonry walls
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