noun
contrail; vapor trail
Refers to the long, thin cloud formed by aircraft exhaust. Synonymous with 飛行機雲, but less common.
See also: 飛行機雲
空に長い飛行雲ができていた。
A long contrail had formed in the sky.
飛行雲が消えるまで数分かかった。
It took a few minutes for the contrail to disappear.