でんとう電灯dentou
1.

A source of illumination that operates using electrical energy, commonly found in residential and commercial spaces, providing light for various activities.

2.

A device that emits light through the use of electricity, often used as a fundamental element in indoor and outdoor lighting systems.

3.

A form of lighting that harnesses electrical power to produce visible light, distinct from other lighting methods such as gas or candle-based sources.

Example:

ルーシーは電灯のスイッチをつけた。

かいちゅうでんとう懐中電灯kaichuudentou
1.

A small, portable light device powered by batteries, designed to illuminate spaces when held in hand.

2.

A compact lighting tool that can be easily carried in a pocket or bag, used to provide direct light in dark or dimly lit areas.

3.

A battery-operated source of light specifically designed for personal use, often utilized during emergencies or outdoor activities.

Example:

この懐中電灯は明かりが弱くなってきた。