air duct

Definition of Air Duct in English :

1. air duct, air passage, airway

a duct that provides ventilation (as in mines)

WordNet Lexical Database for English. Princeton University. 2010.

Air Duct

noun

a pipe or channel permitting air to travel through a system, building, or other structure, such as a mine

The cooled air is then recirculated back to the central heating unit through a central return air duct.

There was also a newly installed air duct to provide oxygen inside the tiny room.

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