pilot-light

Definition

1. Noun:
   • A small flame kept burning continuously: A "pilot light" is a small, steady flame used in gas appliances (such as furnaces, water heaters, or stoves) to ignite the main burner when needed.
   • An indicator light: In some contexts, "pilot light" can also refer to a small light that shows whether a device is on or functioning, though this usage is less common.

Usage Examples

• (The small flame that keeps the gas burner ready to ignite was extinguished.)
• (The small flame must be present to ensure the main burner can light.)
• (The continuous flame was not staying lit.)

Advanced Usage

• "To blow out the pilot light": To extinguish the small flame, often accidentally.

  • A draft from the window blew out the pilot light in the furnace. (The wind caused the flame to go out.)

• "To relight the pilot light": To reignite the small flame after it has gone out.

  • After the gas was turned back on, the technician had to relight the pilot light. (The flame needed to be rekindled.)

• "Pilot light safety": Refers to precautions associated with the continuous flame.

  • Always ensure the pilot light is off before cleaning the gas appliance. (Turn off the flame for safety.)

Variants and Related Words

• Pilot (n): a person who operates an aircraft or ship; also, a test or experimental project.

  • The pilot of the plane landed safely. (The operator of the aircraft.)

• Light (n): electromagnetic radiation that makes things visible; a source of illumination.

  • The light in the room was too dim. (The illumination was insufficient.)

Synonyms

• Standing flame: a flame that remains lit continuously.
• Igniter flame: a flame used to start a larger fire or burner.
• Indicator flame: a flame that signals the device is ready.

Related Idioms

• "Keep the pilot light burning": To maintain a continuous, small effort or presence to ensure readiness.

  • Even during the off-season, the factory kept the pilot light burning on the furnace. (They kept the flame on to avoid restarting later.)

• "Pilot light out": A situation where something essential is no longer functioning.

  • With the pilot light out, the heater was useless. (The flame was gone, so the device could not work.)