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air duct

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

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for air duct

Historical Examples

  • But who would think of putting a burglar alarm on an air-duct?

    The Romantic Analogue

    W.W. Skupeldyckle

  • The ancient conception of the artery as an air-duct gave rise to the derivation from Gr.

  • These fishes have lost the air-duct and on the whole they show the greatest development of the greatest number of structures.