pillar box
noun [ C ] UK uk/ˈpɪl.ə bɒks/ us/ˈpɪl.ɚ bɑːks/
(红色的)信筒,邮筒
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
Compare: letterboxpostbox
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