running light
noun
any of various lights required to be displayed by a vessel or aircraft operating between sunset and sunrise.
Origin of running light
First recorded in 1880–85
Words nearby running light
running gear,
running hand,
running head,
running joke,
running knot,
running light,
running martingale,
running mate,
running myrtle,
running on empty,
running pine
British Dictionary definitions for running light
running light
noun
nautical
one of several white, red, or green lights displayed by vessels operating at night