Pillar - Definition

n 1: a fundamental principle or practice; "science eroded the
pillars of superstition"
2: 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" [syn: column, tower, pillar]
3: a prominent supporter; "he is a pillar of the community"
[syn: pillar, mainstay]
4: a vertical cylindrical structure standing alone and not
supporting anything (such as a monument) [syn: column,
pillar]
5: (architecture) a tall vertical cylindrical structure standing
upright and used to support a structure [syn: column,
pillar]