Needing scrubbing (5)
I believe the answer is:
dirty
'needing scrubbing' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for dirty that I've seen before include "Muddy" , "Salacious" , "Unscrupulous" , "Foul; filthy" , "A couple of days coupling?" .)