Rinse out an adhesive (5)
I believe the answer is:
resin
'an adhesive' is the definition.
(I know that resin is a type of adhesive)
'rinse out' is the wordplay.
'out' indicates an anagram (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" , "Sticky tree exudation" , "It exudes from pines" , "frankincense, for instance?" , "Sticky substance exuded by pine trees" .)