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English definition of “mouthwash”

mouthwash

noun [C or U] uk   /ˈmaʊθ.wɒʃ/ us    /-wɑːʃ/
a liquid used for keeping the mouth clean and smelling freshToiletry and perfumes
(Definition of mouthwash from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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