1. a building or complex of buildings; a multiplex cinema or entertainment venue
Usage: informal; chiefly North American

Examples

• We went to the movie plex downtown to catch the latest blockbuster.
• The new shopping plex opened with ten different stores.
• The entertainment plex includes a cinema, bowling alley, and arcade.
• They built a residential plex with over 200 apartments.
• The sports plex has multiple courts and fields for different activities.