a drill with one or more deep helical grooves in the body.
What Does 🖤 Black Heart Emoji Mean?The black heart emoji is the perfect emoji for a rainy day when you are sitting inside, listening to My Chemical Romance or Dashboard Confessional, and feeling angst-y and misunderstood.
Origin of twist drill
First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for twist drill
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