Duck, one found in Holland (3)
I believe the answer is:
nil
'duck' is the definition.
(I've seen this before)
'one found in holland' is the wordplay.
'one' becomes 'i' (Roman numeral).
'found in' is an insertion indicator.
'holland' becomes 'nl'.
'i' placed into 'nl' is 'NIL'.
(Other definitions for nil that I've seen before include "Nothing found in senility" , "0" , "Don't despair - . . . desperandum" , "You get nothing" , "none" .)