Green’s Dictionary of Slang

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.