2N-COUNT (制度、协议等的)支柱,核心 If something is the pillar of a system or agreement, it is the most important part of it or what makes it strong and successful. (制度、协议等的)支柱,核心
The pillar of her economic policy was keeping tight control over money supply. [+ of]
她经济政策的核心是严格控制货币的供应。
...the last pillar of apartheid.
种族隔离制最后的支柱
3N-COUNT 中坚;栋梁;台柱 If you describe someone as a pillar of society or as a pillar of the community, you approve of them because they play an important and active part in society or in the community. 中坚;栋梁;台柱 [approval]
My father had been a pillar of the community. [+ of]