streak in WordNet English dictionary

1. 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"
   stripe  streak  bar 
   
2. an unbroken series of events
   "had a streak of bad luck"; "Nicklaus had a run of birdies"
   streak  run 
   
3. a distinctive characteristic
   "he has a stubborn streak"; "a streak of wildness"
   streak 
   
4. a sudden flash (as of lightning)
   streak 
   

1. mark with spots or blotches of different color or shades of color as if stained
   mottle  streak  blotch 
   
2. move quickly in a straight line
   "The plane streaked across the sky"
   streak 
   
3. run naked in a public place
   streak