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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for drill bit
The bottom of the hole is kept clean and the drill-bit cooled by a stream of water passing down through its hollow shank.
In the Leyner drill the drill-bit is not connected to the piston, but is struck a quick succession of blows by the latter.