silt Definition

1. Sedimentary material, finer than sand and coarser than clay, consisting of very small rock fragments or mineral particles, deposited by or suspended in running or still water.

Thesaurus: residue, sediment, deposit, sand, sludge, alluvium, mud.

intr
silted, silting
1. To become blocked up with silt.

To become or make something become blocked by silt.