1.Definition: (architecture) a tall vertical cylindrical structure standing upright and used to support a structure

Related Noun(s):column

Category: Objects

2.Definition: a fundamental principle or practice

"Science eroded the pillars of superstition"

Category: General

3.Definition: a prominent supporter

"He is a pillar of the community"

Related Noun(s):mainstay

Category: People

4.Definition: a vertical cylindrical structure standing alone and not supporting anything (such as a monument)

Related Noun(s):column

Category: Objects

5.Definition: anything that approximates the shape of a column or tower

"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"

Related Noun(s):column, tower

Category: General