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streak

noun [C] (MARK)
 
 
/striːk/

Definition

a long, thin mark that is easily noticed because it is very different from the area surrounding it: The window cleaner has left dirty streaks on the windows. I dye my hair to hide my grey streaks. Meteors produce streaks of light as they burn up in the Earth's atmosphere.Dirt and untidiness
(Definition of streak noun (MARK) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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