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English definition of “tonic”

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tonic

noun
 
 
/ˈtɒnɪk/
DRINK [C, U] ( also tonic water,
 
 
)
a drink with bubbles in it that has a slightly bitter taste and is often added to alcoholic drinksSoft drinks
FEEL BETTER [no plural] something that makes you feel better: Spending time with Leo is always a tonic.Medicine in different forms
(Definition of tonic from the Cambridge Learners Dictionary © Cambridge University Press)
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