screw auger

noun
an auger having a helical outer surface suggesting a screw thread.

Origin:
1785–95, Americanism

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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WordNet
screw auger

noun
hand tool for boring holes [syn: auger
WordNet® 3.0, © 2006 by Princeton University.
Cite This Source
00:10
screw auger is always a great word to know.
So is ninnyhammer. Does it mean:
a scrap or morsel of food left at a meal.
a fool or simpleton; ninny.
Example sentences
Meat is minced by being pushed through a perforated plate positioned against a
  rotating knife with a screw auger.
The three types of processes are rotary dryer, heated screw auger, and
  fluidized-bed.
These ingredients combined with water were mixed with a screw auger, and the
  material was then pelletized.
The pellets are fed to the firebox by a motorized screw auger either on a timed
  basis, or as governed by a thermostat.
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