breastbone
"breastbone" is a 10-letter English headword indexed on PlainSpell.
The verdict
“breastbone” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 10
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The central narrow bone in the front of the chest, connecting the collarbone and the top ribs.
| Property | Value |
|---|---|
| Headword | breastbone |
| Language | English |
| Part of speech | Noun |
| Letters | 10 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “breastbone” sits in English frequency
Rare enough to double-check
breastbone is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The central narrow bone in the front of the chest, connecting the collarbone and the top ribs.".
No misspelling variants are generated for breastbone in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. No confusable counterpart is on file for this word, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From Middle English brust-bon, brestbon, from Old English brēostbān (“breastbone”), equivalent to breast + bone. The correct English form is breastbone, spelled B-R-E-A-S-T-B-O-N-E.
Definition
- 1The central narrow bone in the front of the chest, connecting the collarbone and the top ribs.
Etymology
From Middle English brust-bon, brestbon, from Old English brēostbān (“breastbone”), equivalent to breast + bone.
Synonyms
This word in other languages
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 "breastbone"?
What does "breastbone" mean?
What is the origin of the word "breastbone"?
Is PlainSpell free to use?
Using “breastbone”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is B-R-E-A-S-T-B-O-N-E - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.