淤泥 (yū ní): Silt (Noun) — Meaning & Stroke Order

The archaeological team discovered a large amount of silt rich in cultural relics in the ancient river channel.

Are you sure the silt in this swamp won't affect construction safety?

Due to long-term lack of management, the port channel has been blocked by thick silt.

The workers are cleaning the silt from the river channel to improve water quality.