Pen -- the French kind (5)
I believe the answer is:
style
'kind' is the definition.
(style is a kind of kind)
'pen the french' is the wordplay.
'pen' becomes 'sty' (sty is a kind of pen).
'the french' becomes 'le'.
'sty'+'le'='STYLE'
(Other definitions for style that I've seen before include "Pointed pen" , "Method; elegance" , "Elegance, sophistication" , "Vogue or grace" , "Fashion or design" .)