飞机云 Traditional form: 飛機雲 Pinyin (reading): fēijīyún Definitions: contrail Characters: 飞 - to fly, to dart; high 机 - desk; machine; moment, opportunity 云 - cloud; to say, to speak Traditional characters: 飛 - to fly, to dart; high 機 - desk; machine; moment, opportunity 雲 - cloud; to say, to speak