1. A space which is designed to isolate an air conditioned space from another space to which it is connected. […]

A duct, hose, or pipe that supplies compressed air to a pneumatic tool or piece of equipment.

1. Equipment for lifting slurry or dry powder through pipes by means of compressed air. 2. The use of compressed

1. The volume of air which flows air gap, 1 through a closed window or door in a given length

A rod-shaped device for directing a high-velocity stream of compressed air; used to clean away debris from a surface.

In an air-conditioning system, a device through which air is supplied to the system.