Return tip about break (9)
I believe the answer is:
interrupt
'break' is the definition.
(synonyms)
'return tip about' is the wordplay.
'about' is an anagram indicator.
'return'+'tip'='returntip'
'returntip' is an anagram of 'INTERRUPT'.
(Other definitions for interrupt that I've seen before include "Break the continuity of" , "middle of ashtray after burning slip gets put out" .)