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.