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Wikipedia definition
1. Pillar (car)Pillars are the vertical or near vertical supports of an automobile's window area or greenhouse — designated respectively as the A, B, C or D-pillar moving in profile view from the front to rear. In American and British English, the pillars are sometimes referred to as posts (A-post, B-post etc.).
Read “Pillar (car)” on English Wikipedia
Read “ピラー” on Japanese Wikipedia
Read “Pillar (car)” on DBpedia

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