Crossword Genius

Documentary narration (5-4)

Ross

I believe the answer is:

voice-over

(Another definition for voice-over that I've seen is " Narration to a film".)

I've seen this clue in the USA Today.
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.