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English definition of “spasm”

spasm

noun [C or U] uk   /ˈspæz.əm/ us  
an occasion when a muscle suddenly becomes tighter in a way that cannot be controlled: a muscle/muscular spasmmainly UK My leg suddenly went into spasm. spasm of sth a short period of something, especially something that cannot be controlled: a spasm of guilt/coughing/laughing
(Definition of spasm from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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