C-pillar
noun
C-pil·lar
| \ ˈsē-ˈpi-lər
\
\
variants:
or less commonly C-post \ ˈsē-ˈpōst
\
\
plural C-pillars
also C-posts
Definition of C-pillar
: either one of two support posts that connect a vehicle's roof to its body at the rear of the rear door in a four-door vehicle or at the rear of a two-door vehicle
The 2¹/₂-in.-shorter hood, the stretched out C-pillar and the elevation of the trunk …— Don Chaikin, Popular Mechanics, October 1999
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