Meaning

1. A thin skin or film.
2. A skin or coating of proteins on the surface of meat to be smoked, improving the surface adhesion.
3. Cuticle, the hard protective outer layer of certain life forms.
4. The skin of a mushroom cap.
5. The outermost layer of a mushroom, often used only for a surface that is viscid and easily peels off.
6. A thin layer supporting the cell membrane in various protozoa.
7. The growth on the surface of a liquid culture.
8. The photosensitive emulsion of photographic film.
9. A thin plastic membrane used as a beam splitter or protective cover.