idiot light

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English[edit]

Etymology[edit]

idiot +‎ light Suggesting that even a stupid person with no mechanical knowledge can recognize a problem when thus indicated.

Noun[edit]

idiot light (plural idiot lights)

  1. (automotive, idiomatic) Any warning light or indicator on the dashboard of a car, designed to alert the driver of problems, such as the parking brake being on or the oil being low.

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