- an auger having a helical outer surface suggesting a screw thread.
Origin of screw auger
An Americanism dating back to 1785–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for screw auger
Mr. Henry was the first to make the “rag” carpet, and was the inventor of the screw-auger.A History of the Growth of the Steam-Engine
Robert H. Thurston