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jackscrew

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WordReference Random House Unabridged Dictionary of American English © 2026

jack•screw n.

Buildinga 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.

jack¹ + screw 1760–70

'jackscrew' also found in these entries (note: many are not synonyms or translations):

pump - screw jack

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