fluff
n.— «At a recycling plant in San Pedro and five other similar operations around California, giant shredding machines annually reduce 1.3 million junk cars, refrigerators and other appliances into fist-sized chunks of metal. […] For years, auto-shredding companies have been hauling tons of these treated leftovers, known in the industry as fluff, to municipal landfills under a state variance granted more than 20 years ago.» —“California toxic waste regulators target automobile recycling ‘fluff’” by Marc Lifsher Los Angeles Times (California) May 27, 2009. (source: Double-Tongued Dictionary)