covered wagon
noun [ C ] uk/ˌkʌv.əd ˈwæɡ.ən/ us/ˌkʌv.ɚd ˈwæɡ.ən/
（旧时美国西部运载人或货物的）有蓬大马车，大篷车
a large vehicle with four wheels and a high, covered frame that is pulled by horses or other animals, used in the past to transport people and goods to the western part of the US