air duct

Many of the interactive elements have been modified to reduce contact, but some elements are temporarily closed — including the sections in which visitors crawl through an air duct, and attempt to escape East Berlin by hiding in a Trabant.

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

Nerve and air duct, therefore, are the essentials; the rest is so much material in reserve for the process of the metamorphosis.

The air-bladder is double, not cellular, with a large air-duct joining the ventral surface of the œsophagus.

Thus the efficiency of fireplaces may be materially increased, the degree depending upon the character of the air duct installed.

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