Stylish, the French chewing gum (6)
I believe the answer is:
chicle
'chewing gum' is the definition.
(thesaurus)
'stylish the french' is the wordplay.
'stylish' becomes 'chic' (similar in meaning).
'the french' becomes 'le' ('the' in French).
'chic'+'le'='CHICLE'
(Other definitions for chicle that I've seen before include "sapodilla gum" , "Cliche about tropical juice used to make chewing gum" , "Some of something to chew" , "Milky juice of tropical tree used in chewing gum" .)