twist drill

American  

noun

Machinery.

1. a drill with one or more deep helical grooves in the body.

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twist drill British  

noun

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

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Etymology

Origin of twist drill

First recorded in 1870–75

Example Sentences

The tools of industry expanded to include such useful items as the twist drill and ratchet wrench.

From Slate • May 29, 2014

The simplest form of twist drill used is shown at Fig.

From Aviation Engines Design?Construction?Operation and Repair by Pag?, Victor Wilfred

Instead of using an ordinary twist drill, a special hollow drill may be obtained from the Universal Battery Co.

From The Automobile Storage Battery Its Care And Repair by Witte, Otto A.

The holes are best made with a tiny Morse twist drill.

From Things To Make by Williams, Archibald

For these reasons the fluted drill or the twist drill is preferable, especially as their diameters are maintained without forging.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua