A showcase, or vitrine,'s a glassed-in cabinet or display case for displaying delicate or valuable articles such as objects d'art or merchandise in a shop, museum, or house. Showcase may also refer to: Firefox Showcase, an extension for Mozilla Firefox Showcase Cinemas, a chain of cinemas Showcase (comics), a comic book series published by DC Comics Showcase theatre (performing arts group) Showcase (TV channel), a Canadian cable television network Showcase Action Showcase Diva Showcase,… (More on Showcase)