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English definition of “chug”

chug

verb     /tʃʌɡ/ (present participle chugging, past tense and past participle chugged)
chug across/along/up, etc If a vehicle chugs somewhere, it moves slowly, making a low, regular noise with its engine: A boat was chugging across the lake.Sounds made by objects, movement or impact
(Definition of chug verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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