speedometer

English Thesaurus

1. a meter fixed to a vehicle that measures and displays its speed (noun.artifact)

hypernym	:	meter,
definition	:	any of various measuring instruments for measuring a quantity (noun.artifact)

hyponym	:	machmeter,
definition	:	speedometer for measuring the speed of an aircraft relative to the speed of sound (noun.artifact)

part meronym	:	automotive vehicle, motor vehicle,
definition	:	a self-propelled wheeled vehicle that does not run on rails (noun.artifact)