To scold, criticize harshly, or treat someone roughly with abusive language.
British dialectal word of uncertain origin, possibly from 'bally' (a euphemism for 'bloody') combined with 'rag' (to tease or mock), emerging in British English by the 19th century as a colloquial term for harsh criticism.
This wonderfully obscure British word captures something playground culture knows well: the specific cruelty of public mocking and rough treatment that goes beyond simple insults—it's the performance of criticism, meant to humiliate as much as to scold.
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