1. Any foul of filthy substance, as excrement, mud, dust, etc.; whatever, adhering to anything, renders it foul or unclean; earth; as, a wagonload of dirt.
"Whose waters cast up mire and dirt." -- Is. lvii. 20.
2. Meanness; sordidness.
"Honors . . . thrown away upon dirt and infamy." -- Melmoth.
3. In placer mining, earth, gravel, etc., before washing.
(Geom.), a layer of clayey earth forming a stratum in a geological formation. Dirt beds are common among the coal measures.
(a) The use of certain kinds of clay for food, existing among some tribes of Indians; geophagism. Humboldt. (b) (Med.) Same as Chthonophagia.
clay or mud molded by children in imitation of pastry. Otway (1684).
To eat dirt
to submit in a meanly humble manner to insults; to eat humble pie.