JACKKNIFES Meaning and
Definition
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Jackknifes (verb):
1. To jackknife means to fold, bend, or collapse in a sharp V shape, resembling the folding action of a pocketknife. It often pertains to the folding or falling movement of an object at the point where it is hinged or joined.
For instance, in the context of vehicles, it refers to a sudden skidding or turning movement where the trailer or rear portion of a vehicle swings sharply to one side, folding into an acute angle relative to the cab. This action is typically unexpected, and may cause the vehicle to lose control or tip over.
2. Jackknifes can also describe a particular diving position in the sport of diving, particularly in synchronized diving events. A jackknife dive involves standing on the edge of a diving board, bending at the waist while keeping the legs straight, and then falling forward into the water, creating a sharp V shape with the body.
3. In the realm of weightlifting, a jackknife refers to an exercise that targets the abdominal muscles. It involves lying on one's back, legs raised and extended in the air, while bringing the torso and legs together, attempting to touch the toes with the hands. This movement aims to strengthen the core muscles and improve flexibility.
Overall, the term "jackknifes" signifies folding or bending into a distinctive V shape, whether referring to the movement of a vehicle, a diving position, or an exercise.
Common Misspellings for JACKKNIFES
Etymology of JACKKNIFES
The word "jackknife" originated from the combination of two separate words: "jack" and "knife".
The term "jack" refers to a mechanical device used to lift heavy objects, which was originally derived from the name "Jack" used to represent any ordinary man during the 14th century. Over time, the word "jack" came to describe various contraptions, such as a portable device for turning a spit or a lever used to lift or move heavy objects.
On the other hand, "knife" refers to a sharp cutting tool that has been used for many centuries. The word itself can be traced back to the Old English word "cnīf" or "cnēof", which is believed to have Germanic origins.
When combined, the two words create "jackknife", which essentially refers to a folding knife that resembles a jack when folded up.
Similar spelling words for JACKKNIFES
Conjugate verb Jackknifes
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