#dirt__soil  the part of the earth's surface consisting of humus and disintegrated rock
  supertype:  #earth.material  the loose soft material that makes up a large part of the land surface; "they dug into the earth outside the church"
  subtype:  #marl  a loose and crumbling earthy deposit consisting mainly of calcite or dolomite; used as a fertilizer for soils deficient in lime
  subtype:  #regosol  a type of soil consisting of unconsolidated material from freshly deposited alluvium or sand
  subtype:  #residual_soil__residual_clay  the soil that is remaining after the soluble elements have been dissolved
  subtype:  #topsoil__surface_soil__surfacesoil  the layer of soil on the surface
  subtype:  #subsoil__undersoil  the layer of soil between the topsoil and bedrock
  subtype:  #alluvial_soil  a fine-grained fertile soil deposited by water flowing over flood plains or in river beds
  subtype:  #bog_soil__bogsoil  poorly drained soils on top of peat and under marsh or swamp vegetation
  subtype:  #clay  soil that is plastic when moist but hard when fired
     subtype:  #adobe  the clay from which adobe bricks are made
     subtype:  #china_clay__chinaclay__china_stone__chinastone__kaolin__kaoline__porcelain_clay__porcelainclay__terra_alba__terraalba  a fine usually white clay formed by the weathering of aluminous minerals (as feldspar); used in ceramics and as an absorbent and as a filler (e.g., in paper)
     subtype:  #red_clay__redclay  clay whose redness results from iron oxide
     subtype:  #pipeclay__terra_alba__terraalba  fine white clay used in making tobacco pipes and pottery and in whitening leather
     subtype:  #bentonite  an absorbent aluminum silicate clay formed from volcanic ash
     subtype:  #fireclay  a heat-resistant clay
     subtype:  #Kitty_Litter  (trademark) granulated clay; placed in a container where it absorbs the waste products of a cat or dog
     subtype:  #potter's_clay__potter's_earth  clay that does not contain any iron; used in making pottery or for modeling
        subtype:  #slip.potter's_clay  potter's clay that is thinned and used for coating or decorating ceramics
     subtype:  #daub.clay  material used to daub walls
  subtype:  #clunch  (British) hardened clay
  subtype:  #desert_soil__desertic_soil  a type of soil that develops in arid climates
  subtype:  #dust  fine powdery material such as dry earth or pollen that can be blown about in the air; "the furniture was covered with dust"
     subtype:  #chalk_dust__chalkdust  dust resulting from writing with a piece of chalk; "the teacher's hands were covered with chalk dust"
     subtype:  #fallout__radioactive_dust__radioactivedust  the radioactive particles that settle to the ground after a nuclear explosion
  subtype:  #hardpan__caliche  crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions
  subtype:  #fuller's_earth  an absorbent soil resembling clay; used in fulling (shrinking and thickening) woolen cloth and as an adsorbent
  subtype:  #gilgai_soil  (Australian) soil in the melon holes of Australia
  subtype:  #gumbo_soil__gumbosoil__gumbo  any of various fine-grained silty soils that become waxy and very sticky mud when saturated with water
  subtype:  #humus__humu  partially decomposed organic matter; the organic component of soil
  subtype:  #indurated_clay__induratedclay  hardened clay
  subtype:  #Indian_red.dirt__indianred  a red soil containing ferric oxide; often used as a pigment
  subtype:  #laterite  a red soil produced by rock decay; contains insoluble deposits of ferric and aluminum oxides
  subtype:  #loam  a rich soil consisting of a mixture of sand and clay and decaying organic materials
     subtype:  #regur_soil__regursoil__regur  a rich black loam of India
     subtype:  #chernozemic_soil__chernozemicsoil  a rich black loam of Russia
  subtype:  #loess__loes  a fine-grained unstratified accumulation of clay and silt deposited by the wind
  subtype:  #mould__mold  loose soil rich in organic matter
     subtype:  #leaf_mold__leaf_mould__leaf_soil  soil composed mainly of decaying leaves
  subtype:  #mud.dirt__clay  water soaked soil; soft wet earth
     subtype:  #bleaching_clay__bleachingclay__bleachingearth  an adsorbent clay that will remove coloring from oils
     subtype:  #mud_pie__mudpie  a mass of mud that a child has molded into the shape of pie
  subtype:  #bole  a soft oily clay used as a pigment (especially a reddish brown pigment)
  subtype:  #podzol_soil__podzol__podsol__podsol_soil__podsolic_soil  a soil that develops in temperate to cold moist climates under coniferous or heath vegetation; an organic mat over a gray leached layer
  subtype:  #prairie_soil__prairiesoil  a type of soil occurring under grasses in temperate climates
  subtype:  #sand  a loose material consisting of grains of rock or coral
  subtype:  #sedimentary_clay__sedimentaryclay  clay soil formed by sedimentary deposits
  subtype:  #silt  mud or clay or small rocks deposited by a river or lake
  subtype:  #till__boulder_clay__boulderclay  unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together
  subtype:  #tundra_soil  a black mucky soil with a frozen subsoil that is characteristic of arctic and subarctic regions
  subtype:  #wiesenboden  a dark meadow soil rich in organic material; developed through poor drainage in humid grassy or sedge regions

No statement uses or specializes #dirt; click here to add one.