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pillar, mainstay | a prominent supporter | |
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pillar | a fundamental principle or practice | |
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column, pillar | a vertical cylindrical structure standing alone and not supporting anything (such as a monument) | |
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column, pillar | [in architecture] a tall vertical cylindrical structure standing upright and used to support a structure | |
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column, tower, pillar | anything that approximates the shape of a column or tower |