Function: noun
Date: 1628
1 : a stone in the foundation of a building especially : such a stone laid with public ceremony ― compare CORNERSTONE
2 : BASIS , GROUNDWORK
Function: noun
Date: 1628
1 : a stone in the foundation of a building especially : such a stone laid with public ceremony ― compare CORNERSTONE
2 : BASIS , GROUNDWORK
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012