jackscrew
/ˈdʒækˌskruː/
noun
- A mechanical device that uses a screw mechanism to lift heavy objects or apply great force, often used for raising vehicles or supporting structures.
- The mechanic positioned the jackscrew under the car's frame before raising it.
- A jackscrew can lift several tons with just a few turns of the handle.
- He used a jackscrew to lift the corner of the house so he could replace the rotted beam.
Synonyms