Definition of break into
1 : to enter (a house, building, etc.) illegally and especially by using force <Someone tried to break into our house while we were away.>
2 : to begin to do or have (something) suddenly <She broke into tears.> <The audience broke into applause.> <The horse broke into a gallop.>
3 : to enter or get started in (something, such as a profession) <I knew her when she was a young actress trying to break into show business.>
4 : to interrupt (something) <The network broke into the program with a special news report.>
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