post box

noun

"post-box" is a 7-letter English headword indexed on PlainSpell.

The verdict

“post box” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A box in which post can be left by a sender to be picked up by a courier or postman (postal worker).

Corpus desk

Index EN-post-box · post box · English

post box · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "P" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for post box
PropertyValue
Headwordpost box
LanguageEnglish
Part of speechNoun
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “post box” in English

post boxsits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

post box is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.

No generated misspelling entries exist for post box in our index, since its letter pattern doesn't lend itself to common typo substitutions. No confusable counterpart is on file for this word, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From post + box. The correct English form is post box, spelled P-O-S-T- -B-O-X.

Definition

  1. 1
    A box in which post can be left by a sender to be picked up by a courier or postman (postal worker).
  2. 2
    A box or slot into which a courier or postal worker puts letters for a recipient to collect.

Recorded use

Wiktionary examples

These source excerpts show how post box appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Would you take these letters down to the post box please – they've already got stamps.
  2. Many large organisations have post box numbers. Mail from anywhere in the country is collected and delivered to this one address. What more could Post do to provide further value? While delivery of the mail to the post box is reliable, there are subsequent delays of, at times, a week before the mail arrives at the desk of the person within the recipient o…

Etymology

From post + box.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "post box"?
"post box" is spelled P-O-S-T- -B-O-X.
What does "post box" mean?
As a noun, "post box" means: A box in which post can be left by a sender to be picked up by a courier or postman (postal worker).
What is the origin of the word "post box"?
From post + box. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list