A sound result, possibly (6)
I believe the answer is:
rustle
'a sound' is the definition.
(rustle is a kind of sound)
'result possibly' is the wordplay.
'possibly' indicates an anagram.
'result' anagrammed gives 'RUSTLE'.
(Other definitions for rustle that I've seen before include "Steal livestock - make a little noise" , "Steal cattle in the old West" , "Swish - steal cattle" , "take animals" , "Steal ((eg, cattle)" .)