1.
penlight; small pen-shaped flashlight
A small flashlight in the shape of a pen, slim enough to fit in a pocket. Used for inspections, medical exams, and as an emergency light.
2.
penlight; concert light stick (cheering tool)
A stick-shaped, often color-changing LED light waved by fans at concerts and idol events. Strongly associated with otaku and idol fan culture.
Loanword from English "penlight." Sense 2 is a Japanese expansion of meaning: a stick-shaped LED cheering light, often programmable to dozens of colors to support a specific idol member.
Common collocations
- ペンライトを振る: to wave a penlight (sense 2)
- 推しのカラーのペンライト: a penlight in one's favorite member's color (sense 2)
- 医療用ペンライト: medical penlight (sense 1)
Similar words
- 懐中電灯: flashlight — larger, general-purpose
- サイリウム: glow stick — chemical glow sticks, sometimes used for the same cheering purpose as sense 2