| mandrel | Mandril 1. The shaft or spindle to which a tool is attached and by means of which it is rotated. Synonym: mandrin. 3. In dentistry, an instrument used in a handpiece to hold a disk, stone, or cup used for grinding, smoothing, or finishing. Origin: G. Mandra, a stable; the bed in which a ring's stone is set (05 Mar 2000) |
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