centre bit

noun

1. a drilling bit with a central projecting point and two side cutters

Example Sentences

A centre-bit was fitted into a stock, and a hole cut right through.

From Project Gutenberg

That's his centre-bit, and this is the bottle of rock-oil he's supposed to have kept dipping it in to prevent making a noise.

From Project Gutenberg

Crest, out of a window shutter vert a hand, sable, grasping a centre-bit proper.

From Project Gutenberg

In the adjoining piece a hole is bored with a centre bit and a slot is cut with an 1⁄8 in.

From Project Gutenberg

What, then, are we to count the centre-bit and axle of a being so variously compounded?

From Project Gutenberg