Anchor light

1.

(Naut.) The lantern shown at night by a vessel at anchor. International rules of the road require vessels at anchor to carry from sunset to sunrise a single white light forward if under 150 feet in length, and if longer, two such lights, one near the stern and one forward.

Noun

1.

anchor light - a light in the rigging of a ship that is riding at anchor Synonyms: riding lamp, riding light

light, light source, riding lamp, riding light