dredging englannista kaikille kielille - Sanakirja.org (englanti-*)

That which is dredged up.
(uncountable) The act of using a dredger or excavator to dredge a harbour, river, channel or watercourse.

Soundings showed wide variations in depths of water, and from the dredgings of the bottom came new types of sediment [...]

Monikko