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. (noun)streak a sudden flash (as of lightning)
5. (verb)streak move quickly in a straight line "The plane streaked across the sky"
6. (verb)streak run naked in a public place
7. (verb)mottle, streak, blotch mark with spots or blotches of different color or shades of color as if stained