tachograph
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WordNet 3.6
- n tachograph a tachometer that produces a graphical record of its readings; used to record the speed and duration of trips in a motor vehicle
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Webster's Revised Unabridged Dictionary
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- n Tachograph A recording or registering tachometer; also, its autographic record.
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Century Dictionary and Cyclopedia
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- n tachograph A recording tachometer applied to shafting or wheels to register rotation-speed; a speed-indicator. Also tacheograph.
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Webster's Revised Unabridged Dictionary
Gr. ta`chos speed + -graph,