(1880-1968) a US writer who is famous for the way she learned to speak and write after becoming blind (=unable to see) anddeaf (=unable to hear) as a baby. She greatly helped blind and deaf people by collecting money, making speeches, and trying to change people's attitudes. She was the subject of a famous book and film about her life called The Miracle Worker.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.
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