Necktie (6)
I believe the answer is:
cravat
'necktie' is the definition.
(I know that necktie can be written as cravat)
This is all the clue.
(Other definitions for cravat that I've seen before include "Neck scarf" , "Male neckwear" , "leisure-wear" , "Menswear" , "A fancy old necktie" .)