dredging
nounUK /ˈdrɛdʒɪŋ/
US /ˈdrɛdʒɪŋ/
Dredging is scooping up mud or sand from the bottom of water.
The workers used a big machine for dredging the river so boats could pass.
OTHER MEANINGS
2. The act of bringing up something from deep water with a special tool.
Dredging brought up old coins from the shipwreck.
3. The material that is scooped out of the water.
They piled the dredging on the shore to dry.
4. Searching through something to find and gather things.
She was dredging her memory for the answer.