1. tall vertical structures, typically cylindrical, used as supports for buildings or as monuments
2. people or things regarded as reliably providing essential support for something
Usage: figurative

Examples

• The ancient temple was supported by massive stone pillars.
• Marble pillars lined the entrance to the courthouse.
• The old bridge collapsed when one of its concrete pillars cracked.
• Education and healthcare are the pillars of a strong society.
• She was considered one of the pillars of the local community.
• The four pillars of their business strategy guided every decision.