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screw conveyor

noun
  1. a device for moving loose materials, consisting of a shaft with a broad, helically wound blade rotating in a tube or trough.
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Also called worm.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for screw conveyor

screw conveyor

noun
  1. engineering a duct along which material is conveyed by the rotational action of a spiral vane which lies along the length of the ductAlso called: worm conveyor
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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