noun

• (photography) A medium used to capture images in a camera.
• (uncountable) A visual art form that consists of a sequence of still images preserved on a recording medium to give the illusion of motion; movies generally.
  "Despite personal schisms and differences in spiritual experience, there is a very coherent theology of Snape shared between the wives. To examine this manifestation of religious fandom, I will first discuss the canon scepticism and anti-Rowling sentiment that helps to contextualise the wider belief in Snape as a character who extends beyond book and film."
• (countable) The sequence of still images itself, which produces a moving image when played; a movie.

verb

• (ambitransitive) To record (activity, or a motion picture) on photographic film.
  "A Hollywood studio was filming on location in NYC."
• (ambitransitive) To visually record (activity, or a motion picture) in general, with or without sound.
• (transitive) To cover or become covered with a thin skin or pellicle.
  "It will but skin and film the ulcerous place."