tach(redirected from TACHS)
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American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
informal a tachometer
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
[1925–30; by shortening]
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|Noun||1.||tach - measuring instrument for indicating speed of rotation|
measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something
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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