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screw jack

American  

noun

  1. jackscrew.

screw jack British  

noun

  1. Also called: jackscrew.   jack.  a lifting device utilizing the mechanical advantage of a screw thread, the effort being applied through a bevel drive

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of screw jack

First recorded in 1710–20

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The shells of the molds were of ¼-in. steel plate; the jack was an ordinary screw jack.

From Concrete Construction Methods and Costs by Gillette, Halbert Powers

The forward end of each section was supported by a screw jack placed under a rib 2 ft. from the front end.

From Concrete Construction Methods and Costs by Gillette, Halbert Powers

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.