The term 'Fettklappe' does not have a recognized definition in English dictionaries. It appears to be a German word, which could be translated literally as 'fat flap' or 'grease trap.' In German, it might refer to a part of machinery or a device designed to trap grease or fat, often used in kitchens or industrial settings. noun
The chef cleaned the Fettklappe to ensure the kitchen remained hygienic.
In industrial kitchens, the Fettklappe is essential for preventing grease build-up in the ventilation system.