- Slang A light regarding tool panel of an auto that provides forewarning, since an overheated motor.
- Any caution light or signal from the dashboard of a motor vehicle, built to alert the motorist of problems, like the parking brake being on and/or oil being reasonable.
- a colored caution light on a musical instrument panel (for reasonable oil force)
Sentence for "idiot light"
- Dude...Why's my bike not moving?"
Hypernym for "idiot light"
Urban Dictionary for "idiot light"