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Kentish fire

noun British.
  1. prolonged clapping by an audience, especially in unison, indicating impatience or disapproval.

Origin of Kentish fire

said to have originated in Kent, England, in 1828–29, as an expression of opposition to speakers favoring the Catholic Relief Bill
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018