Etymology: (bef. 1000; (n.) ME streke, akin to strike, OE strica stroke, line, mark)
Definition of 'streak'
Princeton's WordNet
1. (noun)streak, run an unbroken series of events "had a streak of bad luck"; "Nicklaus had a run of birdies"
2. (noun)streak a distinctive characteristic "he has a stubborn streak"; "a streak of wildness"
3. (noun)stripe, streak, bar a narrow marking of a different color or texture from the background "a green toad with small black stripes or bars"; "may the Stars and Stripes forever wave"
4. (verb)streak a sudden flash (as of lightning)
5. (verb)streak move quickly in a straight line "The plane streaked across the sky"
1. (noun)streak a long thin line of sth that is a different color from what surrounds it a streak of gray in her black hair; pink streaks in the evening sky
2. streak a series of successes or failures The team is on a seven-game winning/losing streak.
3. (noun)streak the fine powder or mark yielded by a mineral when scratched or rubbed against a harder surface, the color of which is sometimes a distinguishing character