灯とう火か管かん制せい

noun

blackout; light control

Specifically a wartime measure to prevent enemy aircraft from spotting targets at night by extinguishing or concealing lights. Often used in historical contexts.

• 戦せん時じ中ちゅう、灯とう火か管かん制せいが敷しかれた。

  During the war, a blackout was enforced.

• 灯とう火か管かん制せいの下もとで、街まちは真まっ暗くらだった。

  Under the blackout, the town was pitch dark.