noun
flashlight; electric torch
Standard word for a portable battery-powered light. 懐中電灯 is the common modern spelling; 懐中電燈 uses an older form of 灯.
停電したので、懐中電灯を探した。
The power went out, so I looked for a flashlight.
夜の山道では懐中
A flashlight is essential on mountain paths at night.