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tr.v. im·pound·ed, im·pound·ing, im·pounds
1. To confine in or as if in a pound: capture and impound stray dogs.
2. To place (something) in legal custody until a dispute involving it is decided: impounding ballots in a disputed election.
3. To set aside in a fund rather than spend as prescribed: a governor who impounded monies designated for use by cities.
4. To accumulate and store in a reservoir: By damming the stream, the engineers impounded its waters for irrigation.
n. (ĭm′pound′)
1. A place where impounded property is stored, as a lot for keeping vehicles that have been towed by police order.
2. The process or activity of impounding something: the impound of the uninsured car.

im·pound′er n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
(14) A 10-gram rod was dropped onto the laminectomized (T8 segment) cord from a height of 50 millimeters, and the impounder was left for 20 seconds before being withdrawn to produce a moderate contusion.
"Man's progress has the capacity to inhibit all chemical processes or actions, the largest phase of energy improvement, and therefore man may be termed 'the energy impounder.'"
Many urbanizing areas flood up because lacking sewers, while farms go dry because un-irrigated by water impounders.