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post-office box number

n. the number of a letter box at the post office where mail is collected [syn: PO box number, PO Box No]

Usage examples of "post-office box number".

All we have to go on is a post-office box number, and the post office is closed.

After copying down the post-office box number on the truck door, I searched among the bottles in the cab, found one that was half full, and emptied it.