buck.board
n.（名词）A four-wheeled open carriage with the seat or seats attached to a flexible board running between the front and rear axles.平板马车：一种轻便的四轮马车，车身为一有弹性的平板，上设座椅，无顶盖
来源：Obsolete buck [body of a wagon] from Middle English bouk [belly] from Old English bôc 废语 buck [车身] 源自 中古英语 bouk [腹部] 源自 古英语 bôc board board
