What's "break into" mean?

Native speaker’s answer
Rebecca
"Break into" means to enter into a place, vehicle, or container forcefully, usually in relation to crime. It can refer to interrupting a conversation or to start singing a song randomly. Ex: I hope no one breaks into our car tonight. Ex: Jane broke into the discussion at the dinner table and started a debate. Ex: I was at the restaurant, and someone randomly broke into song.