One of the claque employed to applaud at a theatre.(noun)
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Use "claqueur" in a sentence
"He detested three things: a Jesuit, a gendarme, and a claqueur at a theatre."
"Nature had cast this mild-eyed individual for the part of accompanyist in the comedy we call life; a _rôle_ he sometimes varied as now, with the office of _claqueur_, when an uncommonly clever proof of madame's talent for business drew from him this noiseless tribute of applause."
"No _claqueur_ ever remembered to have heard the like before."