silt /silt; silt/ n [U] sand, mud, etc carried by moving water (and left at the mouth of a river, in a harbour, etc). 淤沙; 淤泥; 泥滓(由流動(dòng)之水帶至河口，港中等處者)。 vt, vi [VP2C, 15B] ~ (sth) up. (cause to) become stopped with ~: (使)為淤泥堯星： The harbour has ~ed up. 這海港已首淤泥充塞。 The sand has ~ed up the mouth of the river. 泥沙充塞了河口。