Lose steam (4)

I think it could be either:

flag

tire

(Other definitions for flag that I've seen before include "slow down" , "National emblem; tire" , "Give a signal" , "Iris; ensign" , "Iris - banner" .)

I've seen this clue in the USA Today, the LA Times, The New York Times, The Wall Street Journal and the Universal.

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.