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Noun: silt  silt
  1. Mud or clay or small rocks deposited by a river or lake
Verb: silt  silt
  1. Become chocked with silt
    "The river silted up";
    - silt up

Derived forms: silts, silting, silted

Type of: back up, choke, choke off, clog, clog up, congest, dirt, foul, soil

Encyclopedia: Silt, Colorado