フラッシュ

ふらっしゅ
noun
flash
technologymedia
1. flash (photography); camera flash
the brief burst of bright light used in photography to illuminate subjects
フラッシュをたいて写真(しゃしん)を撮(と)った。
I took a photo using flash.
フラッシュ撮影(さつえい)禁止(きんし)です。
Flash photography is prohibited.
Flash is necessary in dark places.
2. flash (memory); flash storage
a type of non-volatile computer memory used in USB drives, memory cards, and solid-state drives
Save to flash memory.
I copied the data to a flash drive.
SSD is a type of flash storage.

From English "flash." Used across photography, computing, and general contexts.

COMMON COLLOCATIONS (photography):

Usage

The verb "to use flash" in photography is フラッシュをたく, using 焚(た)く (to burn/light). This is a set expression specific to flash photography.