■ noun
1》 a stone that forms the base of a corner of a building, joining two walls.
2》 an important quality or feature on which something is based: a minimum wage remained the ~ of policy.
■ noun
1》 a stone that forms the base of a corner of a building, joining two walls.
2》 an important quality or feature on which something is based: a minimum wage remained the ~ of policy.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004