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Dictionary definition for: Pillar

1. (n) a fundamental principle or practice; "science eroded the pillars of superstition"

2. (n) anything tall and thin approximating 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"

3. (n) a prominent supporter; "he is a pillar of the community"

4. (n) a vertical structure standing alone and not supporting anything (as a monument or a column of air)

5. (n) (architeture) a tall cylindrical vertical upright and used to support a structure

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