BREAK INTO

v. 1. To force an entrance into; make a rough or unlawful entrance into. Thieves broke into the store at night. 2. informal To succeed in beginning (a career, business, or a social life) He broke into television as an actor. 3. To interrupt. He broke into the discussion with a shout of warning. 4. To begin suddenly. He broke into a sweat. She broke into tears. The dog heard his master's whistle and broke into a run.