It's heard to give a different result (6)
I believe the answer is:
rustle
'it's heard to' is the definition.
I can't tell whether this definition defines the answer.
'a different result' is the wordplay.
'a different' indicates anagramming the letters (letters placed in a different order).
'result' is an anagram of 'RUSTLE'.
'give' acts as a link.
Can you help me to learn more?
(Other definitions for rustle that I've seen before include "making little noise" , "Swish - lustre (anag)" , "Swish - steal cattle" , "Steal cattle or livestock with whispering sound" , "Steal 2" .)