A ceremonial stone set at the corner of a building, joining two exterior walls, and often inscribed with the starting and completion dates of construction, the name of the architect and owner, and other details
The cornerstone on the Flatiron Building is set on the Fifth Avenue facade.
{i} first stone of a building laid at a formal ceremony; something fundamentally important; stone forming a corner of two walls
a stone at the outer corner of two intersecting masonry walls a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies
the fundamental assumptions from which something is begun or developed or calculated or explained; "the whole argument rested on a basis of conjecture"
a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies
The cornerstone of something is the basic part of it on which its existence, success, or truth depends. Research is the cornerstone of the profession. = keystone. Ceremonial building block, dated or otherwise inscribed, usually placed in an outer wall of a building to commemorate its dedication. Often the stone is hollowed out to contain newspapers, photographs, or other documents reflecting current customs, with a view to their historical use when the building is remodeled or demolished. Originally placed at a corner, the stone may today be placed elsewhere on the facade
temel taşı üzerinde binanın inşa edilme tarihi bulunan taş
Silbentrennung
te·mel ta·şı ü·ze·rin·de bi·na·nın in·şa e·dil·me ta·ri·hi bu·lu·nan taş