jackshaft
noun, verb
jackshaft is spelled J-A-C-K-S-H-A-F-T: 9 letters. It appears about once in every 76 million words in written English, the 275,970th most frequent word form (wordfreq, 2021 data). As a noun, jackshaft means “A common mechanical component used to transfer or synchronize rotational force in a machine” (English Wiktionary, September 2026). The plural of jackshaft is jackshafts.
How many letters and syllables are in jackshaft?
| Letters | 9: J-A-C-K-S-H-A-F-T |
|---|---|
| In writing | about once in every 76 million words; the 275,970th 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 jackshaft?
Jackshaft appears about once in every 76 million words in written English, the 275,970th 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).
Forms of jackshaft
- jackshafts plural, present, singular, he/she/it
- jackshafting participle, present
- jackshafted participle, past
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does jackshaft mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A common mechanical component used to transfer or synchronize rotational force in a machine.
- 2
A wheelless axle used to turn the wheels of a locomotive.
verb
- 1
To transfer or synchronize rotational force by means of a jackshaft.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Jackshaft in Spanish, French, German and Portuguese
In the sense mechanical component:
| Language | Words |
|---|---|
| Spanish | contraeje, contraárbol |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does jackshaft come from?
From jack + shaft.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).