Dictionary.com lists the following definitions:
5. Bibliography. a unit generally comprising two printed, blank, or illustrated pages of a book, one on each side.
4. one of the sheets of paper in a book
8. Movies. one of the successive pictures on a strip of film.
6.a. one of a series of individual exposures on a strip of film used in making motion pictures
To give you an idea of what this blog will be about. ;)