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Definition of D–pillar
D–pillars
alsoD–posts
: either one of two support posts that connect a vehicle's roof to its body at the rear of a long vehicle (such as a station wagon) The wide D-pillar creates a large blind spot for lane changes and backing out of parking spots. — Mark Phelan, Detroit Free Press, 14 Mar. 2013
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First Known Use of d–pillar
1979
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