外がい灯とうがいとうMeanings1nounoutdoor light; outside lightRefers to a light fixture installed outdoors, such as a porch light, garden light, or street light.玄げん関かんの外がい灯とうが切きれたので、新あたらしい電でん球きゅうに交こう換かんした。The outside light at the entrance went out, so I replaced it with a new bulb.