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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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