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- Dictionaryjack screw
noun
- 1. a screw which can be turned to adjust the position of an object into which it fits.
- 2. another term for screw jack
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- Jackscrew
Mechanical lifting device operated by turning a leadscrew
A jackscrew, or screw jack, is a type of jack that is operated by turning a leadscrew. It is commonly used to lift moderate and heavy weights, such as vehicles; to raise and lower the horizontal stabilizers of aircraft; and as adjustable supports for heavy loads, such as the foundations of houses. Wikipedia
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