Definition

Noun: A small electric light that serves as a visual indicator, typically showing whether an electrical device is powered on or if a specific function (like a motor) is active.

Usage

The term "pilot lamp" is used to describe a specific component on a machine, appliance, or electronic device. It is a status light that provides a simple, at-a-glance confirmation of operation.

Examples

• Noun:
  • The pilot lamp on the amplifier glows red when it's switched on.
  • If the pilot lamp is off, check that the machine is plugged in.
  • The green pilot lamp indicates the motor is running correctly.

Advanced Usage

• "to serve as a pilot lamp": Used metaphorically to describe something that acts as a simple, clear indicator of a state or condition.
  • The steady traffic on the website's forum served as a pilot lamp for the community's continued interest.

Variants and Related Words

• Pilot light (n): A synonymous term, often used interchangeably. It can also refer specifically to the small flame in a gas appliance that ignites the main burner.
• Indicator light (n): A more general term for any light that indicates status, which includes a pilot lamp.
• Status LED (n): A modern equivalent, using a Light-Emitting Diode instead of a traditional bulb.

Synonyms

• Indicator light
• Signal lamp
• Power light
• On/off light

Related Phrases

• Pilot light is out: A phrase indicating the small flame in a gas heater or oven has extinguished and needs relighting. (Note: This phrase uses the related term "pilot light" in a specific, non-electrical context).

Noun

1. indicator consisting of a light to indicate whether power is on or a motor is in operation