Noun: silt silt- Mud or clay or small rocks deposited by a river or lake
"The river delta was rich in silt, making it ideal for agriculture"
Verb: silt silt- Become clogged or filled with silt
"The river silted up";
- silt up
Derived forms: silting, silted, silts
Type of: back up, choke, choke off, clog, clog up, congest, dirt, foul, soil
Encyclopedia: Silt, Colorado