Pleasure of French fair? (7)
I believe the answer is:
delight
'pleasure' is the definition.
(I know that pleasure can be written as delight)
'of french fair?' is the wordplay.
'of french' becomes 'de' ('of' in French).
'fair?' becomes 'light' (as in fair hair).
'de'+'light'='DELIGHT'
(Other definitions for delight that I've seen before include "''A lonely impulse of ...'' (Yeats)" , "Jubilation" , "Rejoice" , "It could be Turkish" , "Gratify - please" .)