Wiktionary
n. An interior cabin light with a dome-shaped cover attached to the ceiling of a car, vehicle, room or building. In a vehicle it is considered a safety feature although in most vehicles it is standard equipment.
Usage examples of "dome light".
Holding it up against the dome light of the flapple, Stafford made out the punches.
She waited a while longer, turned on the dome light and crawled into the back of the car where the tool box was.
Darkness scattered the web and dissipated under the fiery dome light.
A maintenance robot came trundling along the walkway, its red dome light blinking.
For about the first thirty seconds after the dome light has gone off and the Shaftoes have finished saying their prayers out loud, Randy lies there feeling the Impala rock on its suspension from the wake-blasts of passing long-haul semis and feels considerably more alienated than he did while trying to sleep in the jeepney in the jungle town in northern Luzon.