plural of air traffic controller

plural of air de cour

A piece of secular vocal music of a kind popular in France in the late Renaissance and early Baroque period, from about 1570 until around 1650.

A ceiling- or wall-mounted or suspended air conditioner, for when space is limited, because there is no available walls to mount a split system or where there is limited ceiling space for a ducted system.

(plumbing) a mechanical sewer vent that allows air to enter into the sewage system but does not allow exhaust of sewer gases, to aid the flow of sewage by providing air behind water, where a standard vent stack to atmosphere is not possible, by drawing in interior air but keeping harmful sewer gases contained.

that is lighter than air, describing materials or aircraft.

plural of breath of fresh air

plural of air-blown asphalt

plural of Air Chief Marshal

plural of air admittance vent