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

See Examples For:

twist drill

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

From Slate ● May 29, 2014

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.

A twist drill removes metal by cutting and it is not necessary to use a heavy feed as the drill will tend to feed itself into the work.

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

A similar twist drill, 29⁄32nds inch in diameter, drilled a hard steel rail 13⁄16ths inch deep in 1 minute, and another in 1 minute 10 seconds.

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

In the smaller sizes of twist drill, the stem or shank is made parallel, as in Fig.

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