break out v.
1. [mid–late 19C] (US) to appear.
2. [mid-19C+] to break open a package and remove its contents; to get an article or articles from a place of storage.
3. [late 19C] (US tramp) to become a tramp.
4. [1920s+] (also break over) to become socially or sexually wild.
5. [1940s] to wake someone.
6. [1950s+] (US black) to leave.
7. [1960s+] to free, e.g. from prison.