tach(redirected from TACHS)
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informal a tachometer
[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