1An electric light — a lighting fixture powered by electricity, or the light it gives off. Everyday speech often shortens this to 電気, but 電灯 itself is still a live, current word.
夕方になると、通りの電灯が次々と点いていく。
As evening comes, the streetlights come on one after another.
昔はこの村に電灯がなく、夜は真っ暗だったそうだ。
I heard that this village once had no electric lights, and nights were pitch dark.
電灯を取り替えるときは、必ずスイッチを切ってから行ってください。
When replacing an electric light, always turn off the switch first.