pilot light
1
4.2
- noun
- /ˈpaɪlət laɪt/
- Specialized
:
luz piloto
- The pilot light is green when the machine is on.
Examples
-
The pilot light on the furnace indicates that the heating system is working.
-
If the pilot light goes out, you may not realize the appliance is still off.
-
She checked the pilot light before starting the motor to make sure everything was functioning.
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The pilot light on the front panel glowed steadily to show the machine was running.
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Check if the pilot light is functioning properly.
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Make sure the pilot light is lit before you start cooking on the gas stove.
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When the pilot light goes out, the heater will not operate until it is relit.
Synonyms
11
3.7
A device that shows the condition of a machine or system
A small light on a device that shows the power is on
A small light that shows when a device is on or working
How Bright
66
4.3
7
3.2
1
3.2
- Specialized
1
4.2
Surface Forms
Morphology
This is a straightforward noun–noun compound: 'pilot' (a small constant flame) + 'light' (a lamp/signal) combine to denote a small indicator flame. The meaning is compositionally predictable from the constituents and follows a common English compounding pattern, so a learner who knows both constituent senses will readily infer the MWE meaning.
Etymology
Pilot light also means a small lamp on a machine that shows if it is 'on'. Here pilot means a helper or guide and light is the little lamp, so this small light tells you the machine is working.