Source : Webster's Revised Unabridged Dictionary (1913)

Dirt \Dirt\, n. [OE. drit; kin to Icel. drit excrement, dr[=i]ta
   to dung, OD. drijten to dung, AS. gedr[=i]tan.]
   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.