Longman Dictionary of Contemporary English homepage

PO Box

 noun
     
Related topics: Mail
PO Box British English , P.O. Box American English [countable]
TCM
post office box
used before a number as an address at a post office where letters to you can be sent:
Write to P.O. Box 714, Key Largo, Florida.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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