dredge

When a harbor becomes filled with silt, you dredge it to make it navigable again. You scoop out the mud with a big shovel, which is also called a dredge, and make a channel deep enough for ships.

Dredges have been at work in the Hudson River for years getting rid of industrial toxins, dredging up the contaminated sediment and loading it into barges to be carried away. If your car rolled into a lake by mistake, you might be able to hire a dredge that can be dragged across the bottom of the lake to recover things that have fallen in. You can dredge up memories, too, which usually entails reminding people of unpleasant ones they’d rather forget.

Definitions of dredge
  1. noun
    a power shovel to remove material from a channel or riverbed
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    type of:
    digger, excavator, power shovel, shovel
    a machine for excavating
  2. verb
    search (as the bottom of a body of water) for something valuable or lost
    synonyms: drag
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    type of:
    look for, search, seek
    try to locate or discover, or try to establish the existence of
  3. verb
    remove with a power shovel, usually from a bottom of a body of water
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    type of:
    remove, take, take away, withdraw
    remove something concrete, as by lifting, pushing, or taking off, or remove something abstract
  4. verb
    cover before cooking
    dredge the chicken in flour before frying it”
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    types:
    flour
    cover with flour
    type of:
    coat, surface
    put a coat on; cover the surface of; furnish with a surface
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