Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun running_light
1 sense of running light
Sense 1
sidelight, running light -- (light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow)
=> light, light source -- (any device serving as a source of illumination; "he stopped the car and turned off the lights")