Something dug up in the garden? (4)
I believe the answer is:
peat
'garden?' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'something dug up in the' is the wordplay.
I cannot quite understand how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found within the answer.
The remaining letters 'pea' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for peat that I've seen before include "Organic fuel" , "Vegetable matter in bogs, like turf" , "Tape (anag.)" , "Fuel or compost (but no longer to be used as such!)" , "Partly carbonised vegetable matter, turf" .)