streak

ot noun

1. An irregular line left from smearing or motion. The picture I took out the car window had streaks.
2. A continuous series of like events. I hope I can keep up this streak of accomplishments.
3. A tendency or characteristic, but not a dominant or pervasive one. She's a quiet, bookish person, but she has a rebellious streak.
4. The color of the powder of a mineral. So called, because a simple field test for a mineral is to streak it against unglazed white porcelain.

fe’l verb

1. To have or obtain streaks. If you clean a window in direct sunlight, it will streak.
2. To run naked in public. (Contrast flash) It was a pleasant game until some guy went streaking across the field.
3. To create streaks. You will streak a window by cleaning it in direct sunlight.
4. To move very swiftly.