Pig playground (5)

I believe the answer is:

filth

(Other definitions for filth that I've seen before include "Disgusting dirt or obscenity" , "Real dirt or obscenity" , "Carrion" , "Repulsive dirt" , "Muck" .)

I've seen this clue in The Wall Street Journal.

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.