Time to break something (4)
I believe the answer is:
item
'something' is the definition.
(I've seen this before)
'time to break' is the wordplay.
'to break' indicates an anagram.
'time' anagrammed gives 'ITEM'.
(Other definitions for item that I've seen before include "'One thing, poor mite (4)'" , "Record" , "Individual unit in a list" , "See couple" , "Matter" .)