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Post-Office box

Post-Office box

7 3.1
A numbered box at a post office where you collect your mail
  • noun
  • /ˈpoʊstˌɔfɪs bɑks/
translation icon : apartado de correos
  • She collects her mail from the post office box every Saturday afternoon.
  • post-office box address
  • rented a post-office box
  • post office box number

Examples

  • Those letters were written to Evie in care of a different post office box.

    Fiction book (1995)
  • If you want to remain anonymous, you can receive your packages at a post office box instead of your home address.

  • I could write her in care of a post office box in London.

  • There was no phone number, street address, post office box, or email address.

    Fiction book (2002)
  • His post office box payments are past due.

  • If you need anything, write to me at the post office box in Philadelphia.

  • I found a joker card in my post office box.

  • Just to be safe, though, I rented a post office box at the local substation.

    Fiction book (1997)
  • The correspondence was sent to the post office box of an agent in Manhattan named Norman Quimby.

    Fiction book (1995)
  • Well, you mail it to our P.O. box in Iowa in a prepaid envelope.

Synonyms

PO Box
vsPost-Office box
7 3.4

A numbered box at a post office where you receive and collect your mail

is the full hyphenated written form rather than the short form
POB
vsPost-Office box
  • US
3.5

A numbered box at a post office where you receive mail

is the full hyphenated written form rather than initials
letter box
vsPost-Office box
  • UK
1.8

A numbered box at a post office that people rent to receive mail

is focused on receiving mail at the premises, not stressing packages
call box
vsPost-Office box
  • Archaic
6.1

A numbered box in a post office where a person collects their mail

is the standard postal term rather than this less common variant

How Big

pillar box
  • UK
7.1
postbox
  • UK
1 1.0
mailbox
  • US
111 1.0
Post-Office box
7 3.1
letterbox
  • UK
2 1.5

Surface Forms

Post-Office box singular
P.O. boxes plural
P.O. box singular

Morphology

Post-Office + box

The meaning is directly derivable from the parts: a 'box' associated with the 'post office' used for receiving mail. This is a transparent noun-compound pattern with clear cross-linguistic equivalents (e.g., postfach, boîte postale), so a B1 learner who knows the constituent words would readily understand it.

Etymology

Post-Office box is a very literal name: it started as a small rented box inside the local post office, with a number and key so a person's mail would wait there until they could 'collect' it. That's why it means a numbered box at the post office used 'to receive mail'.