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

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

From Project Gutenberg

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

From Project Gutenberg

Oh, no, I believe it's mowing machines,—or maybe twist drills—anyhow one of those missionaries from our own little home-paradise of cogs and gears.

From Project Gutenberg

Testing Work with Dial Indicator A hole is next drilled in the end of the rod by using a twist drill in the tailstock.

From Project Gutenberg

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

From Project Gutenberg