fringe theatre
From Longman Dictionary of Contemporary EnglishRelated topics: Theatrefringe theatreˌfringe ˈtheatre noun [uncountable] British English APTplays by new writers, often on difficult subjects or written in unusual ways, that are not performed in the main theatresExamples from the Corpusfringe theatre• Mime has never enjoyed a place on centre stage, it lives in the shadows of fringe theatre and the Big Top.