Set tea out in the grounds (6)
I believe the answer is:
estate
'grounds' is the definition.
(I've seen this before)
'set tea out in' is the wordplay.
'set' becomes 'est' (I can't justify this - if you can you should give a lot more credence to this answer).
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'in' means one lot of letters goes inside another.
'tea' anagrammed gives 'ate'.
'est' going within 'ate' is 'ESTATE'.
'the' is the link.
Can you help me to learn more?
(Other definitions for estate that I've seen before include "park perhaps" , "All of one's assets and liabilities" , "Desmesne" , "The whole of one's possessionsat death" , "The whole of one's worldly goods" .)