- (in a post office) a locked compartment into which the mail of a box renter is put to be called for. Abbreviation: POB, P.O.B.
Origin of post-office box
An Americanism dating back to 1825–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
post office box
- a private numbered place in a post office, in which letters received are kept until called for