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English definition of “plunge”

plunge

verb (FALL)    /plʌndʒ/
C2 [I or T, usually + adv/prep] to ( cause someone or something to) move or fall suddenly and often a long way forward , down, or into something: We ran down to the beach and plunged into the sea . The car went out of control and plunged over the cliff . Cook the peas by plunging them into boiling water . Niagara Falls plunges 55.5 metres .Moving downwardsFalling and droppingBecoming and making smaller or lessBecoming and making less strong
(Definition of plunge verb (FALL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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