No good; broken (4)
I believe the answer is:
duff
This clue is a double definition.
'no good' is the first definition.
(I've seen this before)
'broken' is the second definition.
(I've seen this before)
(Other definitions for duff that I've seen before include "Bad" , "Faulty (slang); a pudding" , "Pudding -- useless -- Homer Simpson's kind of beer" , "Homer's so-called favourite tipple" , "Heavy pudding - no good" .)