Entertain our group in garden (5)
I believe the answer is:
house
'entertain' is the definition.
(thesaurus)
'our group in garden' is the wordplay.
'our group' becomes 'us'.
'in' means one lot of letters goes inside another.
'garden' becomes 'hoe' (to garden could mean to hoe).
'us' inserted into 'hoe' is 'HOUSE'.
(Other definitions for house that I've seen before include "Residence, dwelling" , "SECOND PART OF 19" , "Bingo hall cry" , "Provide with shelter" , "Residential building" .)