Ramshackle let ruined break (9)
I believe the answer is:
interlude
'break' is the definition.
(thesaurus)
'ramshackle let ruined' is the wordplay.
'ramshackle' indicates anagramming the letters (I've seen this in other clues).
'let'+'ruined'='letruined'
'letruined' is an anagram of 'INTERLUDE'.
(Other definitions for interlude that I've seen before include "Intermission, break" , "Entr'acte" , "Hiatus" , "Break in performance" , "Pause" .)