Golf match involving more of us (8)
I believe the answer is:
foursome
'golf match' is the definition.
(I've seen this before)
'involving more of us' is the wordplay.
'involving' indicates an anagram.
'more'+'of'+'us'='moreofus'
'moreofus' with letters rearranged gives 'FOURSOME'.
(Other definitions for foursome that I've seen before include "The Beatles, for example" , "Golfing group, perhaps" , "golf match" , "Tennis doubles players, for example" , "enough for rubber" .)