noun
Literary or poetic term for a lightning flash; not the everyday word for lightning (雷).
夜空に飛電が走った。
A flash of lightning streaked across the night sky.
noun
urgent telegram; express telegraph
Historical term for an urgent telegram or express telegraph message; now largely obsolete with modern communication.
戦時中、飛電で知らせが届いた。
During the war, news arrived by urgent telegram.