Dirt , v. t. To make foul of filthy; to dirty. Swift.

Dirt (?), n. [OE. drit; kin to Icel. drit excrement, drīta to dung, OD. drijten to dung, AS. gedrītan.]

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.

Dirt bed (Geom.), a layer of clayey earth forming a stratum in a geological formation. Dirt beds are common among the coal measures. -- Dirt eating. (a) The use of certain kinds of clay for food, existing among some tribes of Indians; geophagism. Humboldt. (b) (Med.)Same as Chthonophagia. -- Dirt pie, 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.

-- Webster's unabridged 1913