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English definition of “wallop”

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wallop

verb [T] uk   /ˈwɒl.əp/ us    /ˈwɑː.ləp/ informal
to hit someone hard, especially with the flat part of the hand or with something held in the hand, or to defeat someone easily, especially in sports: She walloped him across the back of the head. "How did your tennis match go last night?" "Oh, I was walloped again."
wallop
noun [C] uk   us  
My mother gave me such a wallop when she eventually found me.
(Definition of wallop from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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