Inflatable animal used by striking workers (3)

I believe the answer is:

rat

(Other definitions for rat that I've seen before include "Inform" , "Cad" , "Domestic rodent" , "Change sides" , "Tell-tale" .)

I've seen this clue in The Washington Post.

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.