郵ゆう便びんポストゆうびんポストMeanings1nounpostbox; mailbox; pillar boxRefers specifically to a public mail collection box, typically red in Japan. Not used for a private mailbox at a residence.この手て紙がみを郵ゆう便びんポストに入いれてきてください。Please put this letter in the postbox.駅えきの前まえに赤あか