Definition of Ritalin™ noun from the Oxford Advanced Learner's Dictionary

 

Ritalin™

 noun
noun
BrE BrE//ˈrɪtəlɪn//
 
; NAmE NAmE//ˈrɪtəlɪn//
 
 
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a drug given to children who cannot keep quiet or still, to help them become calmer and concentrate better He was prescribed Ritalin at the age of five.
See the Oxford Advanced American Dictionary entry: Ritalin™