dirt has definitions from the field of geology
1
[ noun ] (geology) the part of the earth's surface consisting of humus and disintegrated rock

Synonyms

soil

Used in print

(The Sun, [Baltimore],...)

Catcher Frank_House 's throw in an effort to nab Throneberry was wide and in the dirt .

The Orioles got a run in the first inning when Breeding , along with Robinson , the two Birds who got a pair of hits , doubled to right center , moved to third on Russ_Snyder 's single to right and crossed on Kunkel 's wild_pitch into the dirt in_front of the plate .

(B. J. D. Meeuse, The Story of Pollination....)

They keep their wings and feet pressed tightly against their bodies , and in_spite_of their often colorful attire you may very well mistake them for lumps of dirt .

(Arthur Miller, "The Prophecy," in The Best...)

And she was made to fall_in_love with him again there in the rutted dirt driveway standing in the cold fog , mad as she was at his going_away when he really did n't have to , mad at their both got older in a life that seemed to have taken no more than a week to go_by .

2
[ noun ] the state of being covered with unclean things

Used in print

(Jay C. Harris and John R. Van Wazer, "Detergent...)

Dirt , which is here defined as particulate material which is usually inorganic and is very often extremely finely divided so as to exhibit colloidal properties .

The dirt on the soiled objects is mechanically held by surface irregularities to some extent .

However , a major factor in binding dirt is the attraction between surfaces that goes_under_the_name_of van_der_Waal_'s_forces .

In_addition , dirt particles can be held onto a soiled surface by sticky substances or by the surface_tension of liquids , including liquid greases .

The washing process whereby soils are removed consists basically of applying mechanical action to loosen the dirt particles and dried matter in the presence of water which helps to float off the debris and acts , to some extent , as a dissolving and solvating agent .

Related terms

dirtiness dirty lubricate

3
[ noun ] obscene terms for feces

Synonyms

shit turd poop shite crap

4
[ adjective ] (of roads) not leveled or drained; unsuitable for all year travel

Synonyms

ungraded

Related terms

unimproved

5
[ adjective ] made of packed earth or gravel

Synonyms

gravel graveled

Examples

"a dirt road"

Related terms

unpaved

6
[ noun ] disgraceful gossip about the private lives of other people

Related terms

gossip shock

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