Boast about French footwear (5)
I believe the answer is:
sabot
'french footwear' is the definition.
(shoe worn by French peasants)
'boast about' is the wordplay.
'about' indicates an anagram.
'boast' with letters rearranged gives 'SABOT'.
(Other definitions for sabot that I've seen before include "Wooden clog" , "footwear from Paris" , "Boast (anag) - shoe" , "what's afoot?" , "French clog" .)