名詞 buckboard:

1. an open horse-drawn carriage with four wheels; has a seat attached to a flexible board between the two axles

buck.board

n.（名詞）
A four-wheeled open carriage with the seat or seats attached to a flexible board running between the front and rear axles.
平板馬車：一種輕便的四輪馬車，車身為一有彈性的平板，上設(shè)座椅，無頂蓋

來源：
Obsolete buck [body of a wagon] from Middle English bouk [belly] from Old English bôc
廢語(yǔ) buck [車身] 源自 中古英語(yǔ) bouk [腹部] 源自 古英語(yǔ) bôc
board
board