bottle episode

American  

[bot-l ep-uh-sohd] / ˈbɒt l ˈɛp əˌsoʊd /

noun

1. an episode of a television series set in a single limited or confined location, such as a hotel room or a broken elevator, and often using only a few regular cast members, sometimes undertaken as a cost-cutting measure or as a creative challenge.

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Etymology

Origin of bottle episode

First recorded in 2000–05; perhaps modeled on ship in a bottle or to bottle up