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twist drill

noun, Machinery
1.
a drill with one or more deep helical grooves in the body.
Origin
1870-1875
1870-75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for twist-drill

twist drill

noun
1.
a drill bit having two helical grooves running from the point along the shank to clear swarf and cuttings
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
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