Dictionary
un•clog
Pronunciation: (un-klog', -klôg'), [key]
—v., -clogged, -clog•ging.
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v.t.
to free of an obstruction or impediment:
to unclog a drain; to unclog rush-hour traffic.
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v.i.
to become unclogged:
I can't wash the dishes until the drain unclogs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.