break in

verb

1. 1

   make submissive, obedient, or useful

   The horse was tough to break

   I broke in the new intern

2. 2

   break so as to fall inward

   He broke in the door

3. 3

   start in a certain activity, enterprise, or role

4. 4

   break into a conversation

   her husband always chimes in, even when he is not involved in the conversation

5. 5

   intrude on uninvited

   The nosy couple broke in on our conversation

6. 6

   enter someone's (virtual or real) 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!