air duct

air duct

noun
an enclosure, usually of sheet metal, that conducts heated or conditioned air.

Origin:
1865–70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Air duct is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
WordNet
air duct

noun
a duct that provides ventilation (as in mines) [syn: air passage
WordNet® 3.0, © 2006 by Princeton University.
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