Green’s Dictionary of Slang

super n.1

1. [mid-19C–1920s] (also sup) a theatrical understudy; also an extra (see cite 1916).

2. [mid-19C+] (Aus.) the superintendent of a sheep station.

3. [late 19C+] (also supe) a police or prison superintendent.

4. [1900s–30s] (US) a film extra; also as adj.

5. [1910s+] (US, also soup, sup, supe) a superintendent, e.g. of a work crew.

6. [1930s+] (orig. US) a building superintendent, a janitor.

7. [1970s+] (Aus.) a superannuation pension.

8. [2000s] (UK) a supermarket.