Crossword Genius

This dirty world of ours (5)

Ross

I believe the answer is:

earth

I'm a little stuck... Click here to teach me more about this clue!

'this dirty world' is the definition.
'earth' can be an answer for 'world' (synonyms). I am unsure of the 'this dirty' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for earth that I've seen before include "hideaway" , "Human world" , "Terra firma" , "Soil; electrical ground" , "Connection between an electrical device and conductor" .)

I've seen this clue in the Evening Standard.
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.