Definition of mail drop noun from the Oxford Advanced Learner's Dictionary

     

    mail drop

     noun
    noun
    BrE
     
    ; NAmE
     
     
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  1. 1(especially North American English) an address where somebody’s mail is delivered, which is not where they live or work The company’s address was just a mail drop. He’s been using the empty cottage as a mail drop.
  2. 2(North American English) a box in a building where somebody’s mail is kept for them to collect
  3. 3(British English) an occasion when mail is delivered
See the Oxford Advanced American Dictionary entry: mail drop