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tachograph

1 ENTRIES FOUND:
tachograph /ˈtækəˌgræf/ noun
plural tachographs
tachograph
/ˈtækəˌgræf/
noun
plural tachographs
Britannica Dictionary definition of TACHOGRAPH
[count] British
: a device that records the speed of a truck or similar vehicle and the times when it is moving and not moving