mass noun
1- fine sand, clay, or other material carried by running water and deposited as a sediment, especially in a channel or harbour（流水冲积的）泥沙, 淤泥。
1.1
- count noun a bed or layer of such material粉砂尘; 泥沙层。
1.2
- technical sediment whose particles are between clay and sand in size (typically 0.002-0.06 mm)【技】粉砂。
no obj.
1- become filled or blocked with silt淤塞：
the river's mouth had silted up
河口淤塞了
as noun silting the silting of the river estuary.河口淤塞。
1.1
- with obj. fill or block with silt使淤塞。
派生词
siltation
nounsilty
adjective词源
late Middle English: probably originally denoting a salty deposit and of Scandinavian origin， related to Danish and Norwegian sylt 'salt marsh'， also to SALT.