Expanding bit


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(Mech.) a bit or drill made adjustable for holes of various sizes; one which can be expanded in diameter while boring.

See also: Expanding

References in periodicals archive ?
We are 50 years old this year, we have been developing in North Wales for decades, we have been expanding bit by bit but just now development happens to be predominantly in the North, the demand is there.
Expanding bit capacity does not always require extra charge levels, though.
The workshop produced plans for promoting and expanding BIT technologies and proposed collaborations to identify and address standards needs for this technology.