a 32-point light, visible from at least two miles away, shown at night near the bow and not more than 20 feet (6 meters) above the deck of a vessel lying at anchor.
Also called riding light.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for anchor light
Our anchor-light was trimmed and lighted and hoisted up, and we went below to our tea, or supper, as sailors generally term it.For Treasure Bound|Harry Collingwood
Andrew went below and trimmed the anchor-light; then fastened it firmly to the forestay, and set off across the sands.Johnstone of the Border|Harold Bindloss