break in
     v 1: enter someone's property in an unauthorized manner, usually
          with the intent to steal or commit a violent act;
          "Someone broke in while I was on vacation"; "They broke
          into my car and stole my radio!" [syn: {break}]
     2: break into a conversation; "her husband always chimes in,
        even when he is not involved in the conversation" [syn: {chime
        in}, {cut in}, {put in}, {butt in}, {chisel in}, {barge in}]
     3: start in a certain activity, enterprise, or role
     4: intrude on uninvited; "The nosy couple broke in on our
        conversation"
     5: break so as to call inward; "He broke in the door"
     6: make submissive, obedient, or useful; "The horse was tough
        to break"; "I broke in the new intern" [syn: {break}]
Source: WordNet® 2.0