Rinse out tree product (5)
I believe the answer is:
resin
'tree product' is the definition.
(I've seen this in another clue)
'rinse out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'rinse' is an anagram of 'RESIN'.
(Other definitions for resin that I've seen before include "Material exuded from tree" , "Contributor to plastics industry" , "Cannabis, say" , "stuff that's sticky" , "Synthetic compound" .)