speedometer

/spi'dɔmitə/

Thân thiện

The driver checks the speedometer while driving on the highway.

Definition

1. Noun:
   • A device for measuring and displaying speed: A speedometer is an instrument, typically mounted on a vehicle's dashboard, that measures and indicates the vehicle's instantaneous speed of travel.

Usage

• The speedometer is a standard instrument in motor vehicles.
• It provides a real-time reading of how fast the vehicle is moving.
• The primary function is to inform the driver, aiding in safe and legal operation of the vehicle.

Examples

• Noun:
  • I glanced at the speedometer to check I wasn't exceeding the limit.
  • The needle on the old car's speedometer was stuck at zero.
  • Modern digital speedometers are easier to read in some lighting conditions.

Advanced Usage

• "To peg the speedometer" (idiomatic): To drive at the maximum speed the vehicle's speedometer can display.
  • In his youth, he was reckless enough to try and peg the speedometer on that straight road.

Variants and Related Words

• Odometer (n): An instrument for measuring the distance traveled by a vehicle. Often paired with the speedometer in a single instrument cluster.
• Tachometer (n): An instrument measuring the rotation speed of an engine's crankshaft (in revolutions per minute), often found alongside the speedometer.

Synonyms

• Speed indicator: A more formal or technical term for a speedometer.

Related Phrases

• Speedometer cable: The mechanical cable that transmits rotation from the vehicle's transmission to the speedometer (in older vehicles).
• Speedometer reading: The specific speed value shown by the instrument at a given moment.
  • The officer noted the speedometer reading from the patrol car's video.

Học thuật

Noun

1. a meter fixed to a vehicle that measures and displays its speed

Từ đồng nghĩa

• speed indicator