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wagon-headed

American  
[wag-uhn-hed-id] / ˈwæg ənˌhɛd ɪd /

adjective

Architecture.
  1. of the form of a round arch or a semicylinder, like the cover of a wagon when stretched over the bows, as a ceiling or roof.


Etymology

Origin of wagon-headed

First recorded in 1815–25