Rising river surrounds edges of tackier thoroughfare (6)
I believe the answer is:
street
'thoroughfare' is the definition.
(I know that street is a type of thoroughfare)
'rising river surrounds edges of tackier' is the wordplay.
'rising' says the letters should be written in reverse (going up in a down clue).
'river' becomes 'tees' (River Tees).
'surrounds' means one lot of letters goes inside another.
'edges of' suggests removing the centre.
'tackier' with its centre taken out is 'tr'.
'tees' in reverse letter order is 'seet'.
'seet' going around 'tr' is 'STREET'.
(Other definitions for street that I've seen before include "Urban thoroughfare" , "Roadway" , "See 17" , "Part of motorist's route" , "lane" .)