mandrel or mandril /manˈdrəl/

1. A bar of iron fitted to a turning-lathe on which articles to be turned are fixed
2. The axle of a circular saw
3. A miner's pick

• tachistoscopically
• tachists
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• tachogram
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• tachy-
• tachycardia
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• tachygraphic
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• tachygraphies
• tachygraphist