Noun
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the act of blocking
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an obstruction in a pipe or tube
"we had to call a plumber to clear out the blockage in the drainpipe"
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(dentistry) the normal spatial relation of the teeth when the jaws are closed
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(meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft
- occluded front -
closure or blockage (as of a blood vessel)