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dredge up

1. Literally, to take out material in order to increase the depth of a body of water. A noun or pronoun can be used between "dredge" and "up." I think we can deepen the pond by dredging up some more sand.
2. To pull something from the depths of a body of water. A noun or pronoun can be used between "dredge" and "up." Hopefully, the divers will be able to dredge up more pieces of the plane today, and we can start analyzing them.
3. By extension, to resume the discussion of something (usually something unpleasant or troublesome). A noun or pronoun can be used between "dredge" and "up." Can we all please try not to dredge up old hurts at this year's Thanksgiving dinner?
4. To find or obtain something after much searching. A noun or pronoun can be used between "dredge" and "up." What else can we do to dredge up support for this petition? I was able to dredge up some of the suspect's financial records.
See also: dredge, up
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

dredge someone or something

1. . Lit. to scoop something up from underwater. The workers dredged the lifeless body up from the cold black water. They dredged up the mud from the riverbed.
2. Fig. to use some effort to seek and find someone or something. I will see if I can dredge a date up for Friday. Can you dredge up a date for me? I don't have a wrench here, but I'll see if I can dredge one up from the basement.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

dredge up

1. To deepen some body of water by digging and removing material from its bottom: They'll have to dredge up the river, or else the larger ships won't be able to pass through. Because the stream was hard to navigate, the farmer paid someone to dredge it up.
2. To raise something from the bottom of a body of water: The workers dredged up a car from the bottom of the lake. They dredged a lot of garbage up from the bottom of the canal.
3. To bring something back into discussion or importance, especially something unpleasant: I wish you hadn't dredged up that issue with our boss. I had been content to forget about the accident until my neighbor dredged it up by asking me questions about it.
See also: dredge, up
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
Nearly half of the benthic population found to be disappeared after dredging which may be carried away with the dredged spoil.
He continued: "The current proposal does not involve any increase in the total amount to be dredged or the duration of the licence, but only to the annual quantity.
Ditch bed material was collected from the 0 to 5 cm (0 to 2 in) depth, immediately before dredging (hereafter referred to as pre-dredge) and immediately after dredging (hereafter referred to as dredged) for fluvarium experimental procedures described by Smith and Pappas (2007).
If the dredging fee for a given type and size vessel exceeds its standalone dredging cost, it follows that the dredged (shared) channel at the given depth is cost inefficient for this vessel, i.e., this vessel can lower its allocated dredging cost by having the channel at a different depth.
The more dramatic change on the dredged plots can only be ascribed to dredging breaking up the bed surface.
Although the EPA has yet to decide how and where it will dispose of the dredged materials, it has decided that the sediment will not remain in the Hudson River area.
To prevent public access, EPA and the Corps installed additional fencing and warning signs around the perimeter and within the interior of the property where the dredged materials are located.
When mining commences, a systematic programme is followed whereby each block is thoroughly dredged. Waste material disposal is carefully monitored to prevent covering of unmined areas.
Nine-foot design depths were attained while dredged material was placed in depths exceeding 30 feet.
The Bureau added that the sample dredged materials should be sent to MGB Central Office for laboratory analysis.
Flooding worsened by lack of dredging IT was reported that the Royal Winter Fair was flooded over the showground, and 20 cars lost to flood water, because the River Wye is not now getting dredged. Rivers over top their banks because silt is filling up their channels.
After the dredging finishes, backfilling, or filling the dredged areas with clean sand, will then take place which usually takes a few weeks.
Dredged material was to have been disposed of at sea with the most contaminated silt - estimated at around 10% - would be landfilled.