'Sole' used in pun I queried (6)
I believe the answer is:
unique
'sole' is the definition.
(I've seen this before)
'in pun i queried' is the wordplay.
'in' indicates the answer is hidden within the clue.
'UNIQUE' is hidden within 'pun i queried'.
'used' is the link.
(Other definitions for unique that I've seen before include "Without equal or like" , "Sole" , "One-off" , "Radically distinctive and without equal" , "Without equal, unparalleled" .)