Pen has the French elegance (5)
I believe the answer is:
style
'elegance' is the definition.
(I know that style is a type of elegance)
'pen has the french' is the wordplay.
'pen' becomes 'sty' (both can mean an animal enclosure).
'has' is a charade indicator (letters next to each other).
'the french' becomes 'le' ('the' in French).
'sty'+'le'='STYLE'
(Other definitions for style that I've seen before include "Mode; fashionableness" , "Distinctive arrangement, elegance" , "Characteristic manner" , "term" , "Fashion, manner, mode" .)