previews
n. countablen. short looks at a movie, play, or show before it officially starts. You see these to help you decide if you want to watch the whole thing.
n. advance showings or screenings of a film, play, or exhibition before it is officially released to the general public. Often used to generate interest or gather early feedback.
The movie previews start ten minutes before the main film.
We managed to get tickets for the theater previews, which were much cheaper than the opening night seats.
While the critics were not invited to the early previews, word-of-mouth from the test audience suggested that the director's cut was significantly more coherent than the studio version.
Commonly used in the plural when referring to the collection of trailers shown before a cinema film.