Sentence:  As it [the Nile] ebbs, the seedsman / Upon the <WSD>slime</WSD> and ooze scatters his grain. 
Meaning of the word marked with <WSD> tags:  Soft, moist earth or clay, having an adhesive quality; viscous mud; any substance of a dirty nature, that is moist, soft, and adhesive; bitumen; mud containing metallic ore, obtained in the preparatory dressing.