idiot light
nounEtymology From idiot + light, suggesting that even a stupid person with no mechanical knowledge can recognize a problem when thus indicated.
1
Automotive, Transport, Vehicles Slang Any warning light or indicator on the dashboard of a car, designed to alert the driver to problems, such as the parking brake being on or the oil being low.
- Synonyms
- dummy light, warning light
- Hypernyms
- warning light