React violently behind fan in train carriage (6,3)
I believe the answer is:
buffet car
'train carriage' is the definition.
(I know that buffet car is a type of train carriage)
'react violently behind fan' is the wordplay.
'violently' indicates an anagram (letters are violently disrupted).
'behind' says to put letters next to each other.
'fan' becomes 'buff' (synonyms).
'react' anagrammed gives 'etcar'.
'etcar' after 'buff' is 'BUFFET CAR'.
'in' acts as a link.
(Other definitions for buffet car that I've seen before include "catering venue" , "moving place to snack" , "where fast food is obtained?" , "dining carriage" .)