brainbox
/ˈbɹeɪn(ˌ)bɒks/noun
brainbox is spelled B-R-A-I-N-B-O-X: 8 letters. It appears about once in every 37 million words in written English, the 187,122nd most frequent word form (wordfreq, 2021 data). As a noun, brainbox means “The cavity of the skull in which the brain is contained” (English Wiktionary, September 2026). The plural of brainbox is brainboxes.
How many letters and syllables are in brainbox?
| Letters | 8: B-R-A-I-N-B-O-X |
|---|---|
| In writing | about once in every 37 million words; the 187,122nd most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is brainbox?
Brainbox appears about once in every 37 million words in written English, the 187,122nd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce brainbox?
- /ˈbɹeɪn(ˌ)bɒks/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-au-brainbox.ogg, Wikimedia Commons (author and licence on each file's page).
Forms of brainbox
- brainboxes plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does brainbox mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The cavity of the skull in which the brain is contained.
Holonyms: skull, cranium < head
- 2
slangThe skull; the head.
- 3
slangA very intelligent person.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does brainbox come from?
From brain + box.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).