Warning light

noun

Definitions

Noun
  1. 1
    A light on a dashboard or control panel that lights up when something undesirable has happened, or is about to happen; or if placed on a tall structure, to warn aircraft of its presence.

    "Additional warning lights are provided to indicate diesel engine shut-down, traction motor blower failure or high engine cooling water temperature. On the assistant's side of the cab, another light shows should the train heating boiler shut down."

  2. 2
    a cautionary sign of danger wordnet

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