streak of lightning/fire/light etc
From Longman Dictionary of Contemporary Englishstreak of lightning/fire/light etcstreak of lightning/fire/light etcHEMa long straight flash of lightning, fire etc → streakExamples from the Corpusstreak of lightning/fire/light etc• Sometimes there is hope, a streak of light, a blur on a piece of film.• A streak of lightning split the sky.• There was another streak of lightning overhead.