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 September 3, 2026) - The central narrow bone in the front of the chest, connecting the collarbone and the top ribs.
Corpus desk
Index EN-breastbone · breastbone · English
breastbone · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 10 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "B" 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.
| Property | Value |
|---|---|
| Headword | breastbone |
| Language | English |
| Part of speech | Noun |
| Letters | 10 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “breastbone” in English
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.
Recorded use
Wiktionary exampleThese source excerpts show how breastbone appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
He lapped out of his hand, then sat up in the sunlight, crossing his shins in front of him, and after a time let his woolly head fall on his breastbone.
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.