jack·screw

[jak-skroo]
noun
a jack for lifting consisting of a screw steadied by a threaded support and carrying a plate or other part bearing the load.
Also called screw jack.


Origin:
1760–70; jack1 + screw

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
jackscrew (ˈdʒækˌskruː) [Click for IPA pronunciation guide]
 
n
another name for screw jack

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Jackscrew is always a great word to know.
So is callithumpian. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
Example sentences
The unit installs by turning the jackscrew at the bottom of the pole.
Jackscrew, centering pins, and knockout dowel pins shall also be furnished.
The flap actuator jackscrew exhibited no abnormal signs of wear-it rotated freely when checked with the primary motor removed.
They turned the large metal jackscrew attached to the band around the stone.
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