1. An advance showing, as of a movie or art exhibition, to which a selected audience is invited before public presentation begins.

2. also pre·vue An advance viewing or exhibition, especially the presentation of several scenes advertising a forthcoming movie; a trailer.

3. An introductory or preliminary message, sample, or overview; a foretaste.

1. To view or exhibit in advance.

2. To provide a preliminary sample or overview of: The professor previewed the course for us.