[n] trespassing for an unlawful purpose; illegal entrance into premises with criminal intent
[v] make submissive, obedient, or useful, as of wild animals or new items; also used metaphorically of people; "The horse was tough to break"; "I broke in the new intern"
[v] break so as to call inward; "He broke in the door"
[v] start in a certain activity, enterprise, or role
[v] break into a conversation; "her husband always chimes in, even when he is not involved in the conversation"
[v] intrude on uninvited; "The nosy couple broke in on our conversation"; "She irrupted into our sitting room"
[v] 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!"
barge in, break, break, breaking and entering, butt in, chime in, chisel in, cut in, housebreaking, irrupt, put in