Location around River Wear (5)
I believe the answer is:
sport
'wear' is the definition.
(I've seen this before)
'location around river' is the wordplay.
'location' becomes 'spot' (spot is a kind of location).
'around' means one lot of letters goes inside another.
'river' becomes 'r'.
'spot' enclosing 'r' is 'SPORT'.
(Other definitions for sport that I've seen before include "Physical recreation" , "Game; display" , "Fun; wear" , "eg Tennis" , "Exhibit publicly; eg soccer" .)