Dense layer of grass (4)

I believe the answer is:

turf

(Other definitions for turf that I've seen before include "Slab for lawn" , "Cover over with grass" , "Grass clod" , "Patch" , "Horseracing as an industry" .)

I've seen this clue in The Mirror.

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.