11 letters · 13 points in Scrabble
noun the fundamental assumptions from which something is begun or developed or calculated or explained
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
originFrom Middle English corner ston; equivalent to corner + stone. The figurative sense is in part after Psalm 118:22, and is also quoted several times in the New Testament.
Etymology from Wiktionary, CC BY-SA 3.0