dredging
noun
- dig up
Wiktionary
noun
- That which is dredged up.
“Soundings showed wide variations in depths of water, and from the dredgings of the bottom came new types of sediment […]”
- The act of using a dredger or excavator to dredge a harbour, river, channel or watercourse.
verb
- present participle and gerund of dredge