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English definition of “a shot in the arm”

a shot in the arm

something that has a sudden and positive effect on something, providing encouragement and new activity: Fresh investment would provide the shot in the arm that this industry so badly needs.Making things betterBecoming better
(Definition of a shot in the arm from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Definitions of “a shot in the arm” in other dictionaries

Translations of “a shot in the arm”

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