Wash clubs beside tip (5)
I believe the answer is:
clean
'wash' is the definition.
(I know that wash is a kind of clean)
'clubs beside tip' is the wordplay.
'clubs' becomes 'c' (abbreviation used in card games such as bridge).
'beside' is a charade indicator (letters next to each other) (I've seen this in other clues).
'tip' becomes 'lean' (synonyms).
'c'+'lean'='CLEAN'
(Other definitions for clean that I've seen before include "Untainted" , "Devoid of dirt" , "Laundered" , "Not dirty" , "Not prohibited" .)