20 QuestionsalsoAnimal, Vegetable or Mineral American English
a game in which one person thinks of an object and others have to guess what it is by asking questions about it which can only be answered with 'Yes' or 'No'. You sometimes mention the game when you think that someone is asking you too many questions or making you ask them too many questions instead of simply giving you the information you want:
• Just tell me straight - don't make me play '20 Questions'.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.
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