Definition from Wiktionary, the free dictionary
dredging (plural dredgings)
- That which is dredged up.
2011, John P. Rafferty, Oceans and Oceanography, page 189:
- Soundings showed wide variations in depths of water, and from the dredgings of the bottom came new types of sediment […]
- (uncountable) the act of using a dredger or excavator to dredge a harbour, river, channel or watercourse.
that which is dredged up