plank down1.■把…用力放下，猛然放下：He planked down the package.他猛然放下包裹。2.■立即付(款)，付(现钱)：He pulled out a silver dollar and planked it down for a year's subscription.他掏出一枚银元，当场付了一年的订费。3.■旗帜鲜明地表明自己的态度：We planked squarely down on the side of the government.我们断然宣称自己站在政府一边。