Is this a pen-supplier? Answer (Y/N) after review (8)
I believe the answer is:
swannery
'is this a pen-supplier?' is the definition.
(pen is a female swan)
'answer yn after review' is the wordplay.
'after' says to put letters next to each other.
'review' indicates anagramming the letters.
'answer'+'yn'='answeryn'
'answeryn' with letters rearranged gives 'SWANNERY'.
(Other definitions for swannery that I've seen before include "Wildfowl sanctuary" , "Where pens may be productive" , "Place for breeding waterfowl" , "Place where large birds are kept or bred" .)