名词
1. 柱；柱子
A pillar is a tall solid structure, which is usually used to support part of a building.
2. （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.
3. 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.
1. (architecture) a tall vertical cylindrical structure standing upright and used to support a structure
Synonym: column
2. a vertical cylindrical structure standing alone and not supporting anything (such as a monument)
Synonym: column
3. a fundamental principle or practice
e.g. science eroded the pillars of superstition
4. a prominent supporter
e.g. he is a pillar of the community
Synonym: mainstay
5. anything that approximates the shape of a column or tower
e.g. the test tube held a column of white powder
a tower of dust rose above the horizon
a thin pillar of smoke betrayed their campsite