柯林斯詞典pillar box 1. N (in Britain) a red pillar-shaped public letter box situated on a pavement 郵筒2. ADJ characteristic of a pillar box (in the phrase pillar-box red) 鮮紅的 返回 pillar box劍橋詞典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 （紅色的）信筒，郵筒 比較letterbox postbox 返回 pillar box