Badly tease about the grounds (6)
I believe the answer is:
estate
'grounds' is the definition.
(I've seen this before)
'badly tease about the' is the wordplay.
'badly' is an anagram indicator (letters in the wrong order).
'about' means one lot of letters goes inside another.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'tease' with letters rearranged gives 'estae'.
'estae' going around 't' is 'ESTATE'.
(Other definitions for estate that I've seen before include "The whole of one's worldly goods" , "Car with big luggage area" , "Tea-set (anag.)" , "Family land" , "park perhaps" .)