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English definition of “fill (sth) up”

fill (sth) up

phrasal verb with fill     /fɪl/ verb
B1 to become full, or to make something become full: The seats in the hall were filling up fast. As she read the poem, their eyes filled up with tears.Filling and completing
(Definition of fill (sth) up from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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