柯林斯词典pillar box 1. N (in Britain) a red pillar-shaped public letter box situated on a pavement 邮筒2. ADJ characteristic of a pillar box (in the phrase pillar-box red) 鲜红的 返回 pillar box剑桥词典a tall , red , metal box in the street or other public place in which you can put letters for them to be collected and sent to someone else （红色的）信筒，邮筒 比较letterbox postbox 返回 pillar box