Word Pronunciation & Dictionary

jack-knife

Word Rarity Uncommon

Frequency: 4.27 in modern English

Syllables
jack--knife
IPA
29
Scrabble Score
9
Letters
3
Syllables
8
Unique Chars

Meaning

noun

The front-dive pike, in which the body folds and unfolds.

noun

An abdominal exercise where knees and torso are raised from a lying position.

noun

A semi-trailer truck accident in which the vehicle mimics the closing of a jack-knife.

Colloquial

verb

To fold in the middle, as a jackknife does.

verb

To cause a semi-trailer truck to fold like a jackknife in a traffic accident.

Colloquial

Example Sentences

Usage

Inflected Forms

Phrases

Frequently Paired Words

Synonyms

Questions

What does jack-knife mean?
A compact folding knife.

How to pronounce jack-knife

  1. Open the pronunciation page — Open the Speakur entry for “jack-knife”.
  2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
  3. Play the audio — Click Play to hear reference audio for “jack-knife”.
  4. Repeat and practice — Say “jack-knife” aloud, matching stress and vowels until it feels natural.