Go and hunt out duck (6)
I believe the answer is:
nought
'duck' is the definition.
(I've seen this before)
'go and hunt out' is the wordplay.
'and' says to put letters next to each other (I've seen this in other clues).
'out' indicates an anagram (out can mean wrong or inaccurate).
'go' put after 'hunt' is 'huntgo'.
'huntgo' is an anagram of 'NOUGHT'.
(Other definitions for nought that I've seen before include "Love" , "Nil" , "Go hunt for nothing" , "The digit 0" , "Poetically nothing" .)