D-pillar

noun

D-pil·​lar ˈdē-ˈpi-lər 

variants or less commonly D-post

ˈdē-ˈpōst 

plural D-pillars also D-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

Word History

First Known Use

1979, in the meaning defined above

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