the main characters in a series of British books for children by Enid Blyton, mostly written in the 1940s and 1950s. They are a group of two boys, two girls, and a dog called Timmy. They come from middle-class families and go to private schools, but they have a lot of exciting adventures together during the school holidays.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.
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