Unbroken series, of luck say (6)

I believe the answer is:

streak

(Other definitions for streak that I've seen before include "Run naked; long mark" , "Long thin mark" , "Run naughtily naked" , "Stripe of contrasting colour" , "Run very fast" .)

I've seen this clue in The Irish Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.