Definition of dust noun from the Oxford Advanced American Dictionary

      

    dust

     noun
    noun
    NAmE//dʌst//
     
     
    jump to other results
  1. 1[uncountable] a fine powder that consists of very small pieces of sand, earth, etc. A cloud of dust rose as the truck pulled away. The workers wear masks to avoid inhaling the dust. see also cosmic dust Thesaurussoildirt mud dust clay land earth groundThese are all words for the top layer of the earth in which plants grow.soil the top layer of the earth in which plants grow:Plant the seedlings in damp soil.dirt soil, especially loose soil:Pack the dirt firmly around the plants.mud wet soil that is soft and sticky:The car got stuck in the mud.dust a fine powder that consists of very small pieces of rock, earth, etc:A cloud of dust rose as the truck pulled away.clay a type of heavy sticky soil that becomes hard when it is baked and is used to make things such as pots and bricks:The tiles are made of clay.land an area of ground, especially of a particular type:an area of rich, fertile landearth the substance that plants grow in or where people are buried after they dieground an area of soil:The ground was still wet from the rain. They drove across miles of rough, rocky ground. Ground is not used for loose soil:a handful of dry groundPatterns good/rich soil/land/earth fertile/infertile soil/land/ground to dig (at/in) the soil/mud/clay/land/earth/ground to cultivate/plow the soil/land/earth
  2. 2the fine powder of dirt that forms in buildings, on furniture, floors, etc. The books were all covered with dust. There wasn't a speck of dust anywhere in the room. She is allergic to house dust. That guitar's been sitting gathering dust (= not being used) for years now.
  3. 3a fine powder that consists of very small pieces of a particular substance coal/gold dust see also dusty
  4. Idioms
      bite the dust(informal)
       
      jump to other results
    1. 1to fail, or to be defeated or destroyed Thousands of small businesses bite the dust every year.
    2. 2(humorous) to die
    leave somebody in the dust
     
    jump to other results
    to leave someone far behind
    let the dust settle,wait for the dust to settle
     
    jump to other results
    to wait for a situation to become clear or certain He waited for the dust to settle after the election before making any new decisions.
See the Oxford Advanced Learner's Dictionary entry: dust