Rinse out some sticky stuff (5)
I believe the answer is:
resin
'some sticky stuff' is the definition.
(sticky substance)
'rinse out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'rinse' with letters rearranged gives 'RESIN'.
(Other definitions for resin that I've seen before include "Substance from tree-sap" , "plastic material" , "Glue" , "It exudes from pines" , "Sticky exudation from trees" .)