1. an instrument in a vehicle that shows how fast the vehicle is traveling

Examples

• The speedometer showed we were going 65 miles per hour.
• She glanced at the speedometer to check her speed.
• The car’s speedometer was broken and needed repair.
• He watched the speedometer needle climb as he accelerated.
• The speedometer reading helped her stay within the speed limit.
• The digital speedometer displayed the speed in both mph and km/h.