Noun 1. mud or clay or small rocks deposited by a river or lake (hypernym) soil, dirt (derivation) silt up Verb 1. become chocked with silt; "The river silted up" (synonym) silt up (hypernym) clog, choke off, clog up, back up, congest, choke, foul
Silt Definition from Government Dictionaries & Glossaries
Waste from Pennsylvania anthracite preparation plants, consisting of coarse rock fragments containing as much as 30 percent small-sized coal; sometimes defined as including very fine coal particles called silt. Its heat value ranges from 8 to 17 million Btu per short ton. Synonymous with culm.
A mining operation producing coal from these sources of coal.
Silt is granular material of a size somewhere between sand and clay, whose mineral origin is quartz and feldspar. Silt may occur as a soil or as sediment mixed in suspension with water (also known as a suspended load) in a body of water such as a river. It may also exist as soil deposited at the bottom of a water body. Silt has a moderate specific area with a typically non-sticky, plastic feel. Silt usually has a floury feel when dry, and a slippery feel when wet. Silt can be visually observed with a hand lens.