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English definition of “plug away”

plug away

informal phrasal verb with plug     /plʌɡ/ verb [T] (-gg-)
to work hard and in a determined way, especially at something that you find difficult: Katie has been plugging away at her homework for hours.Work, working and the workplaceWorking hours and periods of work
(Definition of plug away from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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