एक या अधिक फोल्डिंग ब्लेड के साथ एक बड़ा चाकू

jackknife's Usage Examples:

For a more advanced workout to complete the 6 best ab exercises, you can try the ball tuck-in exercise, sometimes also called the jackknife.

Concentrate on your lower abs as you slowly jackknife your body upwards while rolling the ball down towards your feet.

jackknife 2SLS.

Slowly jackknife your body upwards as you roll the ball down towards your feet.

This particular machine supports your head, neck, shoulders, and body, allowing you to safely engage in the "jackknife" position that is commonly associated with abdominal workout routines without strain or stress on other body parts.

jackknife position and was given full muscle relaxation.

Now, when's the last time you saw that jackknife Claudia gave you last summer?

jackknife's Meaning':

a large knife with one or more folding blades

Synonyms:

pocket knife, clasp knife, pocketknife,

Antonyms:

rise, ascend,