Dirt, GO? (6)
I believe the answer is:
ground
'dirt' is the definition.
(I know that dirt can be written as ground)
'go?' is the wordplay.
I cannot quite see how this works, but
'go?' could be 'round' (rounding is a kind of going) and 'round' is found within the answer.
A single letter 'g' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for ground that I've seen before include "on which Pachelbel wrote his Canon?" , "territory" , "Base; reason" , "Stadium; crushed" , "Worked hard" .)