1
                           general:: 
                            Phrase(s): start on someone or something 
1. to begin dealing with someone or something.  •  We have finished talking about Gary, and now we will start on Bob.  •  We will start on dessert after you have finished your broccoli. 2. to begin to castigate someone or something  •  Don’t start on me! I didn’t do anything wrong!  •  The politician started on the opposing party, and everyone in the audience cheered.
                        
                        
 
                        
                            McGrawhill's American Idioms And Phrasal Verbs