from the GNU version of the Collaborative International Dictionary of English
- n. An instrument turning on a center, for boring holes. See bit, n., 3.
from The Century Dictionary and Cyclopedia
- n. A carpenters' boring-tool, having a central point or pivot and two wings, called a scriber, or vertical cutting edge for severing the fibers in a circular path, and a router, which cuts horizontally and removes the wood within the circle of the scriber. See bit, 5.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a bit with a sharp center point for guidance and two side cutters
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