burr drill

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Noun1.burr drill - a high speed drill that dentists use to cut into teeth
bur, burr - small bit used in dentistry or surgery
drill - a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows)
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References in periodicals archive ?
He cuts through the skin and folds the flap back to expose the thin membrane covering the skull, the periosteum, which is then cut through and a circle of holes is made in the skull itself with a burr drill.