silt
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source: By Carole.bacarM1FLE.Réunion - Own work, CC BY-SA 3.0
noun
fine sand, clay, or other material carried by running water and deposited as a sediment, especially in a channel or harbor.
(川底などに沈殿した)泥, 沈泥
a bed or layer of silt.
technical sediment whose particles are between clay and sand in size (typically 0.002–0.06 mm).
verb no object
become filled or blocked with silt:
(…を)沈泥でふさぐ［ふさがる］(up)
e.g. the river's mouth had silted up.
with object fill or block with silt:
e.g. the soil ends up silting up the stream
e.g. (as adjective silted) : the silted mouth of the river.
DERIVATIVES
siltation |silˈtāSH(ə)n| noun
silty |ˈsiltē| adjective
ORIGIN
late Middle English: probably originally denoting a salty deposit and of Scandinavian origin, related to Danish and Norwegian sylt ‘salt marsh’, also to salt.