Crossword Genius

Speed of sound (7)

Ross

I believe the answer is:

machone

I've seen this clue in the Canadiana, the L.A. Times Daily, The New Yorker, the Wall Street Journal, The Telegraph, the New York Times and the Family Time.
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.