The farmer loaded his crops onto the creaky old buckboard to take them to the market.

buckboard 是由 buck（跳跃）和 board（木板）组成的复合词，指一种老式的四轮马车，特点是车身由木板构成且没有弹簧减震装置，行驶时会颠簸跳跃。这种马车在美国西部拓荒时期很常见。