dust bunny

plural dust bunnies

1. USinformalA small clump of dust, fluff, hair, particles of skin, etc., that tends to accumulate indoors in areas not regularly dusted, such as under heavy furniture.

   Phobos just can't catch a break. Not only is Mars' lumpy, crusted-over dust bunny of a moon destined to be ripped to pieces in 10 million years, it seems the poor thing can't stop punching itself.

   2016 August 31, Maddie Stone, “We finally know what caused those mysterious craters on Phobos”, in Gizmodo Australia, archived from the original on 31 Aug 2016

   3 more examples

   WASHINGTON: The common American household Dust Bunny has been designated as an endangered species, the U.S. Fish & Wildlife Service (USF&WS) announced last week. "The widespread use of household cleaning products and devices has drastically reduced the habitat of the Dust Bunny," said Noah Present, Acting Director of the Endangered Species Program. "American homes are cleaned too frequently, and much better than in the past." / "We are not to blame for the improper use of our products," responded a spokesman for the Household Products Association. "Correctly used, many of the Dust Bunnies should survive."

   2008, Hugh A. Holub, “Dust Bunnies Designated Endangered Species: 25% of Homes Declared Critical Habitat”, in Deer Seen as Terrorist Threat and Other Stories, [Raleigh, N.C.]: Lulu, →ISBN, page 83

   About 3.6 billion years ago, the sun and its planets coalesced from a cloud of stellar debris, probably helped along by the push from the explosion of a nearby supernova. The particles of cosmic dust began sticking together by static electricity, the same force that forms dust bunnies under your bed. Eventually, the particles got big enough for gravity to start pulling more pieces together.

   2016 August 28, Dale Gnidovec, “Geology: Chemically unique meteorite found in quarry might be ‘extinct’”, in The Columbus Dispatch, archived from the original on 29 Aug 2016

   Sure, some dogs may get super-itchy and lose extra fur, while others may seem to groom themselves incessantly, leaving your floors strewn with serious dust bunnies. In the absence of these and the above-mentioned problems, your Lab mix is just being a dog that conforms perfectly to her breed type. In other words, this breed sheds – a lot!

   2016 August 30, Patty Khuly, “Dog shedding too much? Try these easy fixes”, in Miami Herald, archived from the original on 31 Aug 2016

   Synonyms: beggars' velvet, dust kitten, dust kitty, dust mouse, ghost turd, house moss, slut's wool