archimedes screw
noun phrase
Meaning
A device for raising water or other granular substances, consisting of a helical tube or a spiral blade wound around a central shaft, which is rotated to move the material upwards.
Examples
- The museum displayed a working model of an Archimedes screw used in ancient Roman times.
- Engineers are exploring modern applications for the Archimedes screw in wastewater treatment plants.
Synonyms: water screw, screw pump, spiral pump