[1] : The Collaborative International Dictionary of English v.0.48

silt \silt\ si^lt, n. oe. silte gravel, fr. silen to drain,
   e. sile; probably of scand. origin; cf. sw. sila, prob. akin
   to as. se'on to filter, simacgan to fall, sink, cause to
   sink, g. seihen to strain, to filter, ohg. simachan, icel.
   simaca, skr. sic to pour; cf. gr. 'ikma`s moisture. cf.
   sig, sile.
   mud or fine earth deposited from running or standing water.
   1913 webster
see also:
sig sile 

[2] : The Collaborative International Dictionary of English v.0.48

silt \silt\, v. t. imp.  p. p. silted; p. pr.  vb. n.
   silting.
   to choke, fill, or obstruct with silt or mud.
   1913 webster
see also:
silted silting 

[3] : The Collaborative International Dictionary of English v.0.48

silt \silt\, v. i.
   to flow through crevices; to percolate.
   1913 webster

[4] : WordNet (r) 2.0

silt
     n : mud or clay or small rocks deposited by a river or lake
     v : become chocked with silt; "the river silted up" syn: silt
         up
see also:
silt up 

[5] : Moby Thesaurus II by Grady Ward, 1.0

37 moby thesaurus words for "silt":
   alluvion, alluvium, ash, cinder, clinker, debris, deposit,
   deposition, deposits, detritus, diluvium, draff, dregs, drift,
   dross, ember, feces, froth, grounds, lees, loess, moraine, offscum,
   ooze, precipitate, precipitation, scoria, scree, scum, sediment,
   settlings, sinter, slag, sludge, smut, soot, sublimate

[6] : U.S. Gazetteer (1990)

silt, co town, fips 70195
  location: 39.54965 n, 107.65382 w
  population 1990: 1095 481 housing units
  area: 1.4 sq km land, 0.0 sq km water
  zip codes: 81652

[7] : U.S. Gazetteer Places (2000)

silt, co -- u.s. town in colorado
   population 2000:    1740
   housing units 2000: 668
   land area 2000:     2.821723 sq. miles 7.308230 sq. km
   water area 2000:    0.000000 sq. miles 0.000000 sq. km
   total area 2000:    2.821723 sq. miles 7.308230 sq. km
   fips code:            70195
   located within:       colorado co, fips 08
   location:             39.546316 n, 107.652072 w
   zip codes 1990:     81652
   note: some zip codes may be omitted esp. for suburbs.
   headwords:
    silt, co
    silt

Silt >> S Words
Silt, definition of term: Silt
silt_pag1.html

Silt Up >> S Words
Silt Up, definition of term: Silt Up
silt+up_pag1.html