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pillar

 
/ˈpɪl·ər/ n [C]

Definition

a strong vertical column made of stone, metal, or wood that supports part of a building or stands alone for decoration A pillar is also someone or something that is an important part of a group, place, or activity: He’s a pillar of the Dallas business community.
(Definition of pillar n from the Cambridge Academic Content Dictionary © Cambridge University Press)

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