silt 
(sĭlt)
(sĭlt)n.
A sedimentary material consisting of very fine particles intermediate in size between sand and clay.
v. silt·ed, silt·ing, silts
v.intr.
To become filled with silt: an old channel that silted up.
v.tr.
To fill, cover, or obstruct with silt: River sediments gradually silted the harbor.
[Middle English sylt, probably of Scandinavian origin; see sal- in the Appendix of Indo-European roots.]
silt·ation n.
silty adj.
- South Pass
- southpaw
- South Picene
- South Platte River
- South Polar Region
- South Pole
- southron
- South Sandwich Islands
- South Saskatchewan River
- South Sea Islander
- South Sea Islands
- South Seas
- South Shetland Islands
- South Shields
- South Slavic
- south-southeast
- south-southwest
- South Sudan
- South Temperate Zone
- South Vietnam
- South Vietnamese
- southward
- southwardly
- southwards
- southwest